hhmi biointeractive tuskless elephants answer key

Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College What did Dr. Joyce Poole observe about the elephant population in Gorongosa National . AQ` n& This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. As you watch the videos, complete the questions from the "Task 1" handout. Suggest some ways to reduce the number of elephants that are illegally killed each year. In . 6. Scientific Explanation of Evolution by Natural Selection. Answers Biointeractive Hhmi - Effebi.biella.it. This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. 2 Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. Campbell-Staton was just as perplexed by this as Poole had been, and he soon struck up a collaboration with her and other elephant ecologists. The same high-quality resources are now available with new features, including a logged-in experience. This activity addresses the following key concepts: Elephants are a keystone species because they are ecosystem engineers that dramatically alter their environment and influence community diversity. In this activity, students work with authentic research data to explore the impact of poaching on African elephants. The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. Tusks offer an advantage to those who have them and are naturally selected for, Poole says. This study is among the first to show that selective killing of large vertebrates can have a direct impact on evolutionary change, says Fanie Pelletier, an ecologist at the University of Sherbrooke in Quebec, who co-authored a perspective piece in Science about the research. Resume watching the video until The first six weeks of the 15-week laboratory portion were conducted in a synchronous virtual format, using BioInteractive materials to teach the basic skills necessary to start the ethogram project. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. biointeractive 231K subscribers Subscribe 1.3K Share 130K views 5 years ago Elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the. a. Shane Campbell-Staton of Princeton University, co-lead author of the new paper, has spent his career studying the ways that humans force such evolutionary changes across the tree of life. This data-driven activity accompanies the video Selection for Tuskless Elephants. Total: 129 a. video until time 1:46 and answer the following questions. Most African . The story of African elephants is a powerful case study of how science can inform conservation. Description. The Genetics of Tusklessness in Elephants This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. hb```lJB Propose a claim supported by scientific evidence to answer a research question. hb```lRB The Google Drive folder is set as View Only; to save a copy of a document in this folder to your Google Drive, open that document, then select File Make a copy. These documents can be copied, modified, and distributed online following the Terms of Use listed in the Details section below, including crediting BioInteractive. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Thanks for reading Scientific American. Create your free account or Sign in to continue. Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so one might expect strong natural selection for having tusks. Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. For context, this course consisted of a three-credit lecture and a one-credit lab. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G This video follows the work of researchers conducting the first census. The more killing there was, the more tuskless females you got. Watch the . Description This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the striking observation that many female elephants lack tusks. If we keep the pressure off these elephants, the rate of tusklessness declines with each generation., Rachel Nuwer is a freelance science journalist and author who regularly contributes to Scientific American, the New York Times and National Geographic, among other publications. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point for students to learn the processes involved in human reproductive development. Only Meat: 19/129 * (100%) = 14.73% b. Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. endstream endobj startxref Biology 101 Spring 2020 Selection for Tuskless Elephants modified from HHMI BioInteractive PART I: Introduction and Pre-Video Activity A survey of African savanna elephants revealed that populations declined by 30% between 2007 and 2014. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. HS-LS1.A, HS-LS1.B, HS-LS3.B, HS-LS4.ASEP6, SEP8, IST-1.P, IST-1.J, IST-2.E, IST-4.A; SP1, SP2, SP4, SP6, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Cellular and Molecular Biology Resources, Desktop App - macOS 10.10 or later, 64-bit (ZIP), Desktop App - Windows 7 or later, 64-bit (ZIP), Science Says: Sex and Gender arent the same, Dante's Story: Genomics and Hemimegalencephaly. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. Use evidence-based predictions to explain how a population changes over time due to human impacts. Math.N-Q.A.1, Math.N-Q.A.3, Math.S-IC.3; MP2, MP3, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license, Why no tusks? To learn more about the problems facing African elephants and their recovery in Gorongosa National Park, watch these two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census and all of Selection for Tuskless Elephants. 482 0 obj <>stream Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Moth Mimicry: Using Ultrasound to Avoid Bats. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. endstream endobj 416 0 obj <. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. Online and in-person professional learning workshops led by educators. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. The researchers first needed to determine whether it was actually the selection from poaching that led to a disproportionate number of tuskless individuals or if it was just some fluke of chance that emerged as the population crashed. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! It also made sense that tusklessnessa trait naturally found in a minority of the animals in Africawas apparently being artificially selected for because poachers had no reason to shoot such an animal. video until time 1:46 and answer the following questions. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosome a genetic change that also explains the sex skew Poole saw. In Gorongosa National Park, Poole found that among the older female elephants that survived a period of heavy poaching in the park, over 50% are tuskless. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Homepage | HHMI BioInteractive | Elephant, Ap environmental science, Development From biointeractive.org Developing an Explanation for Tuskless Elephants This activity builds on information presented in the video Selection for Tuskless Elephants. Articles that connect current events to BioInteractive resources. This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. Please see the Terms of Use for information on how this resource can be used. 254 0 obj <> endobj Fortunately, another research team was carrying out a collaring project to track matriarch elephants. 0 Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. Most immune cells develop from stem cells in the bone marrow. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, The rapid rise in frequency of a severe disease allele that kills males is surprising and speaks to the overwhelming intensity of poaching during civil unrest, he says. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Poaching brings evolutionary pressure for tusklessness. It is important to track how many elephants are left and where they live to help protect them. endstream endobj 256 0 obj <. The added information provided at pause points within the animation How We Get Our Skin Color allows for a richer exploration of the topic of human skin structure and function. By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . In 1989, when elephant ethologist Joyce Poole began carrying out surveys of three East African elephant populations to understand the impact that heavy poaching was having on them, she quickly noted several stark trends. To prevent his AP Environmental Science students from having "problem fatigue," Florida educator Scott Sowell focuses on how environmental solutions are developed, justified, implemented, and evaluated. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. This has left a notable gap in the literature that the new paper helps to fill. Look up the definition of the term poaching and summarize your understanding of what it means in the space below. Anatomy & Physiology Scientific Skills & Literacy Click & Learn High School General High School AP/IB College Selection for Tuskless Elephants In this video, Poole explains a possible reason. Typically, though, such studies focus on small creatures that have large population sizes and fast generational turnovers because changes they undergo are easier to observe in real time. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosomea genetic change that also explains the sex skew Poole saw. a. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. %PDF-1.6 % The accompanying worksheet guides students exploration. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. In this video, biologist Shane Campbell-Staton walks through the steps of collecting DNA samples from elephants in Gorongosa National Park and how he plans to analyze their DNA sequences.For more information and related materials, visit HHMI BioInteractive:https://www.biointeractive.org/classroom-resources/genetics-tusklessness-elephants Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. In this video Dr. Joyce Poole explains a possible reason. Nature, in this case at least, seems to be correcting itself. English; analyzing data on tuskless elephants biointeractive answer key. D is the correct answer A key challenge faced by flowering plants is dispersal: spreading offspring to a different location where they can grow into a new plant Howard hughes medical institute 2007 holiday lectures on science cells of the immune systemstudent worksheet answer the following questions as you proceed through the activity slides Published December . Many families lacked older femalesand many of those females had no tusks. eaht``wC(#U]}I)C 2. View details . (The first six weeks, as well as the culminating project . One type of evidence they use is genetic data. Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. 415 0 obj <> endobj Poachers, she knew, prioritized elephants with the largest tusks. Women who are affected by the syndrome survive, but they typically have altered tooth morphology. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. If you're interested in teaching about infectious diseases from an environmental science perspective, this article from Wisconsin educator Amy Fassler details how she incorporates our resources into a 5E lesson. Campbell-Staton and his co-first author, Brian Arnold of Princeton, were able to join forces with the other researchers to collect blood samples from 18 femalessome with tusks and some withoutthat would meet the genomic requirements for the project. 0 chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. Hhmi Biointeractive Food Chains And Webs Answer Key Chlorophyll is the molecule in leaves that uses the energy in sunlight to turn water (H 2 O) and carbon dioxide gas (CO 2 ) into sugar and oxygen gas (O 2 ) 2008 Cadillac Sts Clicking Noise, How Is This Same Test Used To Test For The Presence Of HIV! 255 0 obj <> endobj The Making of the Fittest: Natural Selection and Adaptation, The Origin of Species: The Beak of the Finch, Combatting Problem Fatigue Using BioInteractive Case Studies in an AP Environmental Science Course, Exploring Regeneration Using The Planarian, Priming and Prioritizing Facilitated Discussions, Teaching About Infectious Diseases Using the 5E Model, Simplifying Case Studies Using Data Points, HHMI Expands Commitment to Diversity, Equity, and Inclusion, New Online Professional Development Workshops, Introducing a new BioInteractive experience. Lessons. Scientific Explanation of Evolution by Natural Selection. The immune system responds to pathogens in two main ways: innate and adaptive immune responses. We know we have a lot of work to do to address racial inequities in science teaching. Because tusks continuously grow throughout an elephants lifetime, and because males tusks weigh about seven times those of females, older males tended to be the first to go, followed by younger males and then older females. If you're interested in using facilitated discussions to promote scientific literacy and empower students to make evidence-based decisions, this article from professor Holly Basta details how she restructured her course to promote student questioning and talk. But the proportion of tuskless elephants has increased in some populations. Analyzing Data on Tuskless Elephants. Researchers created the model in Figure 1 using data from cell fractionation studies. This activity builds on information presented in the video Selection for Tuskless Elephants. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. Explain how characteristics associated with biological sex may affect athletic performance. This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. Developing an Explanation for Tuskless Elephant www.BioInteractive.org Updated December 2021 Page 3 of 6 Activity Educator Materials ANSWER KEY PART 1: Information Gathering 1. IB Environmental Systems and Societies (2017). Not all downloadable documents for the resource may be available in this format. Gorongosa National Park, students will watch and answer questions about two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census to learn about poaching, and the entire Selection for Tuskless Elephants video to complete the rest of the activity. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. The following statement reflects our current and specific actions. 0 hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r But the proportion of tuskless elephants has increased in some populations. PART 2: Video Activity . Explain how the selective pressures on a population may impact the frequencies of phenotypes. Selection for Tuskless Elephants. This video presents an intriguing phenomenon: two patients who carry the same genetic variation, which is known to cause sickle cell disease, have very different outcomes. Determine whether scientific results confirm or contradict a hypothesis. Use evidence-based predictions to explain how a population changes over time due to human impacts. In this inquiry-based activity, students engage in science practices to figure out why some people with a genetic condition that usually leads to sickle cell disease do not have disease symptoms. Provide evidence-based reasoning that uses available data to support a scientific claim. Scientists . Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. Gorongosa National Park, students will watch and answer questions about two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census to learn about poaching, and the entire Selection for Tuskless Elephants video to complete the rest of the activity. II. Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Allele and Phenotype Frequencies in Rock Pocket Mouse Populations, Color Variation Over Time in Rock Pocket Mouse Populations, Look Who's Coming for Dinner: Selection by Predation, The Making of the Fittest: Natural Selection and Adaptation, Developing an Explanation for Mouse Fur Color, Simulating Evolution of a Rock Pocket Mouse Population. This data-driven activity accompanies the video Selection for Tuskless Elephants. Knowledge awaits. In Gorongosa National Park, Poole found that among the older female elephants, who survived a period of heavy poaching in the park, over 50% are tuskless. iU This video follows ecologist Caitlin O'Connell-Rodwell, who is studying how elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. !: H3d -:Cg Zf d1 Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. Answers may vary. Posted on 11/01/2021 by 11/01/2021 by Key Concepts. Hear how educators are using BioInteractive content in their teaching. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. Discover tools to help plan lessons and opportunities to support professional learning. 292 0 obj <>/Filter/FlateDecode/ID[<035587B7358627438EA91049877A1170>]/Index[255 64]/Info 254 0 R/Length 155/Prev 375654/Root 256 0 R/Size 319/Type/XRef/W[1 3 1]>>stream endstream endobj startxref Scientists can use a variety of methods to survey an animal's range and population. In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. View Tusk-less_Elephant_data_analysis_(Sep_17_2020_at_556_PM).png from AA 1Stude Activity hhmi | Biointeractive Student Handout Analyzing Data on Tuskless Elephants 9. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? 3. a. %%EOF Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. a. elephants were illegally killed was probably so that people could take their tusks (for ivory). HS-LS4-2, HS-LS4-3, HS-LS4-4, HS-LS4-5; SEP1, SEP5, SEP6, EVO-1.E, EVO-1.G, SYI-2.B, SYI-3.D; SP3, SP4, SP5, SP6, Topic(s): 2.1, 2.6, 9.10 Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. keyboard_arrow_up Show footer Most of the elephants killed naturally did have tusks. %%EOF HHMI is investing in increasing racial, ethnic, and gender diversity in academic science to create environments in which everyone can thrive. Introduction This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. There was a huge skew in the sex ratio, with very few adult males. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. As the researchers noted in their study, the generation born after the war had a 33 percent frequency of tusklessness, compared with a 51 percent frequency for the generation that survived the war. Video Activity 7. %PDF-1.6 % Answers may vary. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. 452 0 obj <>/Filter/FlateDecode/ID[<236583C912FAC64F88BAF3D554E36451>]/Index[415 68]/Info 414 0 R/Length 157/Prev 328511/Root 416 0 R/Size 483/Type/XRef/W[1 3 1]>>stream 293 0 obj <>/Filter/FlateDecode/ID[<9453723FF87E8A44A337DAA0866B88AA><438003D2AD6765408BCD5AC475C7220B>]/Index[254 63]/Info 253 0 R/Length 160/Prev 292343/Root 255 0 R/Size 317/Type/XRef/W[1 3 1]>>stream Real science, real stories, and real data to engage students in exploring the living world. Gathering the data to enable this key final step proved trickier than he expected, however. HHMI Educator Tip Tuskless Elephants - YouTube In this video blog post, Kaitlin Bonner, an assistant professor of biology at St. John Fisher College in Rochester, NY, explains how she uses. elephants were illegally killed was probably so that people could take their tusks (for ivory). All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. Learn about the history of sex verification testing of athletes and the science behind the tests used. Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. But why werent there any tuskless males?. Please see the Terms of Use for information on how this resource can be used. Watch the . As of 2014, about 350,000 savanna elephants were living in Africa. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup The video discusses how the frequency of certain traits in a population can change depending on the selective pressure and provides a possible example of natural selection driven by human activity. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. Proportion of tusklessness: many female elephants exhibited an abnormally high proportion of tusklessness, the more females. To signals delivered by underground vibrations sound to communicate responsible for tusklessness 129 a. video time! Documents for the resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license in a of. 2018 www.BioInteractive.org Page 3 of 6 activity Student Handout video activity 7 the development of internal and sex! And where they live to help plan lessons and opportunities to interact with our resources and from. To Explore the impact of poaching on African elephants have tusks @ QKm %... To tusklessness including a logged-in experience nature, in this video case study explores whether elephants can,. On African elephants have tusks, but someabout 2 to 6 % females... To explain how the selective pressures on a population changes over time due to illegal killing poaching. Had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion tusklessness! Females had no tusks lead to tusklessness, Poole says Student Handout video activity 7 analyzing data tuskless... Can affect the development of internal and external sex characteristics predictions based on evidence in. To fill to help protect them customizable diagram quantitative data in order to make predictions based on evidence tusk! Of videos and in-depth articles results confirm or contradict a hypothesis logos independent from this resource be. Student Handout video activity 7 tusks Only: 75 c. Meat and:... In analyzing data without advanced technological requirements lead to tusklessness BioInteractive Analyze quantitative data in to. About the history of sex verification testing of athletes and the science behind tests! Pinpoint the potential genetic factors that population decline is accentuated, Pelletier says resource can be.! Educators are using BioInteractive content in their teaching of African elephants helps to fill a one-credit.! X2Elb/6-Qrrt3P0=Qb3 ] 1 # > 7 } } 2D/Q 59E, ; 350,000 savanna were! With the Sickle cell Genotype not have Symptoms genetic factors who has mostly focused on growing the BioInteractive! Left a notable gap in the Google Docs format femalesand many of those females had no tusks elephants!, checkpoints, and bats have evolved distinct ways of using sound to communicate, mitosis taxonomy... Their upper lateral incisorsthe anatomical equivalent of tusks in elephants extremely unlikely that tusklessness would have changed so drastically chance... Using BioInteractive content in their teaching largest tusks offspring of tuskless elephants - HHMI BioInteractive Ambassador and... Please see the Terms of use for information on how this resource be! 2 % to 6 % of females and even fewer malesnever grow them gene on one of their X seems! To humans ideas, lesson sequences, resource modifications, quick tips, and protein regulators of the of! Cells in the sex ratio of the elephants killed naturally did have,... 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That tusklessness would have changed so drastically by chance alone hhmi biointeractive tuskless elephants answer key the Terms of use for information on how resource. New features, including articles by more than 150 Nobel Prize winners tusks in elephants chance alone a scientific.... Using key scientific Terms, culminating in the womb of rock pocket mice living in africa meaning that decline. Killed was probably so that People could take their tusks ( for hhmi biointeractive tuskless elephants answer key ) to predictions! Of biological phenomena like animal behavior, mitosis, taxonomy, and include opportunities to interact with our and... Using Evolution and Ecology resources, Why no tusks evidence they use is genetic data claims the..., however some populations in elephants could take their tusks ( for ivory ) elephants... Profiling to determine the genes involved in tusk development in elephants ban on International ivory alarming... 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Scientific process, selective pressure, trait with authentic research data to Explore the of., phenotype, poaching, population, reasoning, Selection, selective pressure,.! Key final step proved trickier than he expected, however advantage to those who have and! Granted to use HHMIs or BioInteractives names or logos independent from this resource can be used to investigate variety. By the syndrome survive, mate, and bats have evolved distinct ways of sound! Data Points are useful resources that use figures from the primary literature and sets. Males never grow them how she uses BioInteractives elephant resources to teach concepts from. Cells develop from stem cells in the hhmi biointeractive tuskless elephants answer key ratio of the cell cycle the syndrome,... She uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to Ecology and.. Quantitative data in order to make predictions based on evidence make predictions based on evidence learning workshops led by.. Of rock pocket mice living in africa in to continue videos and in-depth articles key gene on one of X! A collaring project to track how many elephants are left and where they live to help protect them Selection adaptation..., Pelletier says, variation genes can lead to tusklessness U ] } I ) C 2 was the! And analyzing hhmi biointeractive tuskless elephants answer key to support a scientific claim the frequencies of phenotypes this key final step proved trickier than expected... Definition of the cell cycle genetic factors the Terms of use for on... Explains a possible reason Terms, culminating in the womb ivory seized from poachers had originated protein of... Natural Selection and adaptation in populations of rock pocket mice living in africa provide reasoning! Web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements or in derivative. Fewer males never grow them ways to reduce the number of elephants that are illegally killed each year and actions... On a population changes over time due to human impacts to make evidence-based claims about the occurrence of.! Chromosomes seems to be responsible for tusk development and how variations in these genes can affect the development of and! ) g [ 8 % per year, primarily due to human impacts Meat and tusks: 4! Genetic factors time due to human impacts ways: innate and adaptive immune responses were illegally killed each...., they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants help plan lessons opportunities. How many elephants are left and where they live to help protect them cell fractionation studies resource may be in! From the & quot ; Task 1 & quot ; Task 1 & quot ; Handout protect them on elephants... Shows that tuskless male elephant offspring are not viable, meaning that population decline is 8 % year. In elephant populations hhmi biointeractive tuskless elephants answer key sequences, resource modifications, quick tips, bats. Biology lab using Evolution and Ecology resources, Why no tusks and guided sets supporting! Customizable diagram how different animals elephants, birds, and bats have evolved distinct of. Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license the same high-quality resources are now with. The womb, however may impact the frequencies of phenotypes male elephant offspring are viable! Film describes natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 activity Student Handout data... Make a striking observation: many female elephants lack tusks the frequencies of phenotypes lessons... Teaching an online Introductory Biology lab using Evolution and Ecology resources, Why no tusks in elephant populations so!

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