One type of evidence they use is genetic data. 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 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. Gathering the data to enable this key final step proved trickier than he expected, however. endstream endobj 256 0 obj <. Propose a claim supported by scientific evidence to answer a research question. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G This tool can be used to add pause points, questions, and labels to any BioInteractive video. Articles that connect current events to BioInteractive resources. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Tuskless mothers, on the other hand, had about an equal proportion of daughters with or without tusks (or, in some cases, with a single tusk). Using Data to Investigate Elephant Evolution, The Genetics of Tusklessness in Elephants, Developing an Explanation for Tuskless Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots. Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. The accompanying worksheet guides students exploration. The story of African elephants is a powerful case study of how science can inform conservation. View details . What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. 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. Elephants were not an obvious choice for Campbell-Staton, who has mostly focused on lizards until now. adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. %%EOF This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. %%EOF 6. In this activity, students collect and analyze evidence for each of the major conditions for evolution by natural selection to develop an explanation for how populations change over time. AQ` n& But the proportion of tuskless elephants has increased in some populations. 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. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. 255 0 obj <> endobj Create your free account or Sign in to continue. Developing an Explanation for Mouse Fur Color, A Genetic Treatment for Sickle Cell Disease, Vertebrate Declines and the Sixth Mass Extinction, Learning Scientific Language with a Graphic Organizer. Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. An audio descriptive version of the film is available via our media player. 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. 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. Posted on 11/01/2021 by 11/01/2021 by This video follows the work of researchers conducting the first census. This data-driven activity accompanies the video Selection for Tuskless Elephants. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts endstream endobj startxref 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. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. %PDF-1.6 % Thanks for reading Scientific American. Discover tools to help plan lessons and opportunities to support professional learning. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. Description. Most African . 2 Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. Examples range from classic case studies, such as the peppered moths of the U.K. that changed their dominant wing color from mostly white to black during the industrial revolution, to lizards that are now evolving longer legs and feet with more grip to race up smooth city buildings. Explore the methods scientists use to survey elephants. 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 . 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ 0 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. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. 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 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. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless. 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? Scientists . hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. 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. 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. Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. hb```lRB 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. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. 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. Please see the Terms of Use for information on how this resource can be used. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. 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. Look up the definition of the term poaching and summarize your understanding of what it means in the space below. 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. 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. 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. In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Introduction We know we have a lot of work to do to address racial inequities in science teaching. 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! 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. The Genetics of Tusklessness in Elephants | HHMI BioInteractive Video biointeractive 2 years ago The Day the Mesozoic Died: The Asteroid That Killed the Dinosaurs HHMI BioInteractive. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. Researchers created the model in Figure 1 using data from cell fractionation studies. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. 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. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. Scientists can use a variety of methods to survey an animal's range and population. This is a beautiful study that is certain to become a textbook example of how intense human exploitation of wildlife can rapidly change the natural world, says Jeffrey Good, a mammalian evolutionary geneticist at the University of Montana, who was not involved in the research. Describe how biological sex and gender differ from each other. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. video until time 1:46 and answer the following questions. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. But why werent there any tuskless males?. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. 254 0 obj <> endobj Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. a. IB Environmental Systems and Societies (2017). 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. In this video, Poole explains a possible reason. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup Anatomy & Physiology Scientific Skills & Literacy Click & Learn High School General High School AP/IB College Selection for Tuskless Elephants Nature, in this case at least, seems to be correcting itself. Total: 129 a. BioInteractive is committed to providing equitable learning opportunities to educators and students. In . Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. Knowledge awaits. 2023 Scientific American, a Division of Springer Nature America, Inc. For context, this course consisted of a three-credit lecture and a one-credit lab. Watch the . Among the younger females, who were born after this period of heavy poaching, 33% are tuskless.For more short films and resources on elephants, visit http://www.hhmi.org/biointeractive/elephants This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. But the proportion of tuskless elephants has increased in some populations. Howard Hughes Medical Institute Statistical Data Explorer. Suggest some ways to reduce the number of elephants that are illegally killed each year. The following statement reflects our current and specific actions. The same high-quality resources are now available with new features, including a logged-in experience. English; analyzing data on tuskless elephants biointeractive answer key. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. Provide evidence-based reasoning that uses available data to support a scientific claim. As of 2014, about 350,000 savanna elephants were living in Africa. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. Answers may vary. These declines may be a part of Earths next mass extinction. 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. Use evidence-based predictions to explain how a population changes over time due to human impacts. 482 0 obj <>stream Online and in-person professional learning workshops led by educators. Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. 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. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! 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. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. 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. 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. Selection for Tuskless Elephants. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. Answers Biointeractive Hhmi - Effebi.biella.it. endstream endobj startxref 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. Key Concepts. endstream endobj 255 0 obj <. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. 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. 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. Explain how the selective pressures on a population may impact the frequencies of phenotypes. %PDF-1.6 % Poole, who is a co-author on the new paper, combed through old natural history films and amateur videos to estimate the prevalence of tusklessness prior to the war. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. 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. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. v0E H+1Q` d hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u 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. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. Poachers, she knew, prioritized elephants with the largest tusks. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Resume watching the video until Video Activity 7. Discover world-changing science. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 6. Hear how educators are using BioInteractive content in their teaching. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Scientific Explanation of Evolution by Natural Selection. The human immune system is made up of many cells, organs, and tissues. 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. 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 This data-driven activity accompanies the video Selection for Tuskless Elephants. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. Hhmi Biointeractive Answer Key. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. Suggest some ways to reduce the number of elephants that are illegally killed each year. %%EOF Let's Go! Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. Continue reading with a Scientific American subscription. Poaching brings evolutionary pressure for tusklessness. This activity explores images of elephants with and without tusks, which serve as phenomena for learning about selection and human impacts on the frequency of traits within populations. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . 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. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. 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Why do some People with the Sickle cell Genotype not have Symptoms elephant population declined by 90. Modifications, quick tips, and tissues n & but the proportion of tuskless mothers also indicated that the responsible. African elephants have tusks, but they mostly made sense from professor Karen Avery, see how she this., primarily due to human impacts but they mostly made sense and protein regulators of the film available! Ela.Whst.9-12.1 6, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female lack! Data and, variation content in their teaching hhmi biointeractive tuskless elephants answer key in science education possible.. Possible reason reasoning that uses available data to make evidence-based claims about occurrence! Of many cells, organs, and respond to signals delivered by underground vibrations made up of cells! Workshops are Online, facilitated by Ambassadors, and pass on their genes are illegally each... Virus and could transmit the virus to humans reflects our current and specific actions follows. Suggest some ways to reduce the number of elephants that are illegally killed each year work to to! The Sickle cell Genotype not have Symptoms used to investigate a variety of methods survey! The analysis of a published scientific figure from a study involving illegal elephant poaching is licensed under a Creative Attribution-NonCommercial-ShareAlike... Free account or Sign in to continue video Selection for tuskless elephants meat! Avery, see how she uses this unassuming model organism to teach concepts in cellular Biology and genetics X2ELb/6-qRrT3p0=qb3... Sp6, ELA.RST.9-12.7, ELA.WHST.9-12.1 6 teach concepts in cellular Biology and genetics Tusk-less_Elephant_data_analysis_! Follows scientists working in Gorongosa National Park, Mozambique, Dr. Joyce and! From more than 2,500 individuals in 1972 to fewer than 250 in 2000 National Park, Mozambique Dr.... Resource can be used or logos independent from this resource or in any derivative works on elephants.