This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. Watch the . 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. PART 2: Video Activity . As you watch the videos, complete the questions from the "Task 1" handout. Let's Go! Analyzing Data on Tuskless Elephants Pre-Video Activity 1. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. 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. 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. 6. II. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. These declines may be a part of Earths next mass extinction. Not only do animals die due to poaching, but there is also additional decline because half of the male offspring from the surviving tuskless mothers do not survive., Good agrees that the findings are alarming. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r Elephant Evolution and Adaptation. Tusks offer an advantage to those who have them and are naturally selected for, Poole says. v0E H+1Q` d Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. 3. a. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. 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 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. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. The accompanying worksheet guides students exploration. Explore the methods scientists use to survey elephants. Use evidence-based predictions to explain how a population changes over time due to human impacts. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. Discover tools to help plan lessons and opportunities to support professional learning. Selection for Tuskless Elephants. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . a. Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. 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? %%EOF This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Only Meat: 19/129 * (100%) = 14.73% b. But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. 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. 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 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. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. We know we have a lot of work to do to address racial inequities in science teaching. In this video, Poole explains a possible reason. 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. As of 2014, about 350,000 savanna elephants were living in Africa. 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. Explain how characteristics associated with biological sex may affect athletic performance. Women who are affected by the syndrome survive, but they typically have altered tooth morphology. Introduction BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. Selection for Tuskless Elephants. Posted on 11/01/2021 by 11/01/2021 by 2 Thanks for reading Scientific American. 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. !: H3d -:Cg Zf d1 Many families lacked older femalesand many of those females had no tusks. The story of African elephants is a powerful case study of how science can inform conservation. One type of evidence they use is genetic data. eaht``wC(#U]}I)C Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. Knowledge awaits. Describe how biological sex and gender differ from each other. %PDF-1.6 % This tool can be used to add pause points, questions, and labels to any BioInteractive video. 254 0 obj <> endobj endstream endobj 256 0 obj <. 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These documents can be copied, modified, and distributed online following the Terms of Use listed in the Details section below, including crediting BioInteractive. 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. Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. This data-driven activity accompanies the video Selection for Tuskless Elephants. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. 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. 2023 Scientific American, a Division of Springer Nature America, Inc. 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 Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? 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. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. %%EOF Among the younger females, who were born after this period of heavy poaching, 33% are tuskless. 6. This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. Most immune cells develop from stem cells in the bone marrow. Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. hb```lJB hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts 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. 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. For context, this course consisted of a three-credit lecture and a one-credit lab. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. 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. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. keyboard_arrow_up Show footer 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. Some prevent pathogens from entering the body, and some attack pathogens already inside the body. 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 Thanks for reading Scientific American. 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. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. 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. Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Fortunately, another research team was carrying out a collaring project to track matriarch elephants. Use evidence-based predictions to explain how a population changes over time due to human impacts. 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. Description. BioInteractive is committed to providing equitable learning opportunities to educators and students. endstream endobj 255 0 obj <. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. This video follows the work of researchers conducting the first census. 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. Answers Biointeractive Hhmi - Effebi.biella.it. English; analyzing data on tuskless elephants biointeractive answer key. 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. Analyze quantitative data in order to make predictions based on evidence. 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