Let's Go! This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . Scientists . Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? Additionally, disruptions to the same region of the X chromosome in humans is associated with a syndrome that usually causes male fetuses to abort in the second trimester. 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 %PDF-1.5 % Researchers created the model in Figure 1 using data from cell fractionation studies. Nature, in this case at least, seems to be correcting itself. 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. Provide evidence-based reasoning that uses available data to support a scientific claim. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. endstream endobj 256 0 obj <. 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. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. The human immune system is made up of many cells, organs, and tissues. a. Explain how characteristics associated with biological sex may affect athletic performance. 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. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. 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 Keep up with the latest from BioInteractive! One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. Suggest some ways to reduce the number of elephants that are illegally killed each year. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts video until time 1:46 and answer the following questions. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. Watch the . 2 View details . 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. Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. |U#62RF>^/,[4@[S5MT3M_q+; u* rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. In . Selection for Tuskless Elephants. Genetics Evolution Scientific Skills & Literacy Scientists at Work High School General High School AP/IB College Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. This video follows the work of researchers conducting the first census. 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 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. PART 2: Video Activity . Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. 318 0 obj <>stream 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. In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. Explain how the selective pressures on a population may impact the frequencies of phenotypes. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. Poachers, she knew, prioritized elephants with the largest tusks. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. 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. It also includes a library of ready-to-use videos with embedded questions. 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. 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. After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. An audio descriptive version of the film is available via our media player. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. Most of the elephants killed naturally did have tusks. hbbd```b``"WHg -,^ A Famed Dolphin-Human Fishing Partnership Is in Danger of Disappearing, Vertebrates May Have Used Vocal Communication More Than 100 Million Years Earlier Than We Thought. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. hb```lRB 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. 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. Discover tools to help plan lessons and opportunities to support professional learning. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. 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. Students apply what they have learned to evaluate the results of different tests that have been used throughout sports history to qualify female athletes to compete. 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. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r The story of African elephants is a powerful case study of how science can inform conservation. 2. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. 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 iU %%EOF v0E H+1Q` d 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. Use evidence-based predictions to explain how a population changes over time due to human impacts. Key Concepts. Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so there is a strong natural selection for having tusks. 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. Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. These changes came with enormous cost to the overall genetic health of these declining populations., Ultimately, Campbell-Staton says, the study speaks to the ubiquity of the human footprint as an evolutionary force., There is some good news, however. 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). Create your free account or Sign in to continue. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 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. 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? Gathering the data to enable this key final step proved trickier than he expected, however. Most immune cells develop from stem cells in the bone marrow. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G 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. Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. Analyzing Data on Tuskless 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 . This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. 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hhmi biointeractive tuskless elephants answer key
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