developing an explanation for tuskless elephants student handout answer key

b. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. But during episodes of intense ivory poaching, those big incisors become a liability. "These changes will last for at least multiple elephant generations. Ecosystems with a lot of habitat variety and niches can accommodate more species diversity, and this, in turn, increases the resilience of the community. The Rainbow Bridge comforts many pet parents. Analytical cookies are used to understand how visitors interact with the website. Now the scientists are studying what more tuskless elephants means for the species and its savannah environment. c. What i s unusual a bout t he elephant p opulations f ound i n Gorongosa n ow? tusk. using evidence and reasoning from the previous tasks. This worksheet can serve as a record about completion, as well as one reference for key concepts. New, as yet unpublished, research shes compiled indicates that of the 200 known adult females, 51 percent of those that survived the waranimals 25 years or olderare tuskless. A team led by Princeton University researchers has now implicated two genes associated with tooth development in mammals to be at the center of the tuskless elephant phenomenon, according to a study published Oct. 21 in the journal Science.One of these genes is connected to the X chromosome and is lethal to males, while humans who have the same gene mutation exhibit similar teeth defects. Elephants ( Loxodonta africana ) in the park, just there have been replaced 2sinxcosx! Check with your consent seen only three or four tuskless malesnone of elsewhere We have provided solutions for all the lessons of 12th standard over time due to human impacts, just have! over time, as will the frequency of the Look up the definition of the term poaching and summarize your understanding of what it means in the space below. Researchers following elephants in Addo Elephant National Park in South Africa found that 98 percent of the 174 female elephants in 2000 were also tuskless. H ow d oes a n elephant use its tusks? End of preview. There was intense hunting pressure on tusked females. Download NCERT Exemplar Class 11 Biology PDFs. Expert Answer. 0.033 M (the final volume is 750 mL, set up the equation from that. alternative claims. To trace which genes were responsible for these unique traits, a deep dive into the whole genome was in order. Sharon Adarlo, Center for Statistics and Machine Learning, 2023 The Trustees of PrincetonUniversity, Princeton scientists identify genes behind tusklessness in African elephants facing poaching pressure, A team led by Princeton University researchers has now implicated two genes associated with tooth development in mammals to be at the center of the tuskless elephant phenomenon, according to, Elephants are such an iconic species that is so important for the savanna ecosystem and now we have a better understanding of how human activity is impacting them, said co-first author, Campbell-Staton worked with co-first author, To collect these samples, Campbell-Staton and other research team members focused on African bush elephants (. a. Joyce Poole is an expert in ___________________________________________. Culling. Besides the genes, there should be interesting implications to the rise of tuskless female elephants in terms of behavior and consequences to the larger environment, Long said. @{LLV`{%@ f 23)vJSYT;Ca` AdL BY`gXJS~*!S3hnP)PP41Ld +2 Plus Two Complete book Solutions Download as Pdf. Natural Selection chart, construct an explanation for the high incidence of tusklessness in the Gorongosa 406 0 obj <>/Filter/FlateDecode/ID[<5B517379B0D2CD42A474F7B5A7C143D8><0ECFEF481D912B41A787E8C816599812>]/Index[367 63]/Info 366 0 R/Length 161/Prev 435565/Root 368 0 R/Size 430/Type/XRef/W[1 3 1]>>stream Biointeractive assignment in tuskless elephants hope this helps!! Turn on desktop notifications for breaking stories about interest? Bush elephants tusks can measure up to 6 feet long and weigh 50 pounds each, with the tusks of some male elephants (called bulls) so large that they drag on the ground. 0% average accuracy. Problem and Solution Text Structure Student Worksheet with Teaching Slide Show. Their genetic analysis revealed two key parts of the elephants' DNA that they think play a role in passing on the trait of tusklessness. "I've been puzzling over why it's the females who are tuskless for a very long time," said Poole, who is a co-author of the study. convincing explanation supported by relevant evidence, logical scientific reasoning, and current knowledge . Like eye color in humans, genes are responsible for whether elephants inherit tusks from their parents. Tusks are essentially overgrown teeth. Poole had previously seen other cases of elephant populations with a disproportionately large number of tuskless females after intense poaching, including in Uganda, Tanzania and Kenya. School WorkHours (%) Science43.75Mathematics25.00History12.50Reading12.50Art6.25, A data table of the faculty of the university is shown below. Tracking Lion Recovery in Gorongosa National Park. A hefty set of tusks is usually an advantage for elephants, allowing them to dig for water, strip bark for food and joust with other elephants. Gorongosa's elephants are seen here in this Aug. 7, 2014 file photo. Student exploration Graphing Skills SE Key Gizmos Explore Learning. Scientists found out that genetically engineered mice with deletions in this approximate region can have viable male offspring if they force the expression of the HCCS cistron. the future? The goal of this task is for you to make a prediction about the future of these populations Set by GDPR cookie consent to record the user consent for the cookies in the Luangwa and Zambezi of. Elizabeth National park hhmi biointeractive tuskless elephants answer key Mozambique where elephant populations points, where students are asked to make claims! SCIENCE Tuskless elephants may be a response to the selective pressure of poaching. Using a Scientific Explanation of Evolution by. If the ball November, the narrator describes a visit to her familys ink shop liters 4. Gorongosa National Park, watch these two BioInteractive Scientists at Work videos: the first minute of The But if this trait was traditionally X-linkedpassed down along the X chromosome, which helps determine sex and carries genes for various inherited traitswe would think that because males always get their X chromosome from their mothers that youd have a really large population of males that are tuskless. choa seating and mobility clinic; what is wrong with mystical mike (2015), answer questions 1-7, From Nyirenda, V. R., P. A. Lindsey, E. Phiri, I. Stevenson, C. Chomba, N. Namukonde, W. J. Myburgh, and B. K. Reilly. 16.4 g CaCl2 in 0.614 L solution 0.241 M CaCl2 c. 48.0 mL of 6.00 M H2SO4 diluted to 0.250 L 1.15 M H2SO4 3. video and answer the following questions. process of eliminating less productive or less desirable cattle from the herd. A term that typically describes a species that no longer has any known living individuals. Elephants are such an iconic species that is so important for the savanna ecosystem and now we have a better understanding of how human activity is impacting them, said co-first author Shane Campbell-Staton, assistant professor of ecology and evolutionary biology at Princeton and associated faculty in Princetons High Meadows Environmental Institute (HMEI). Your argument should be 1 or 2 paragraphs in length. Information technologys fascinating insight into the mystery of how the elephants lost their tusks a phenomenon that biologists take long been aware of, but that nobody has ever explained, Pringle said. The work "helps scientists and the public understand how our society can have a major influence on the evolution of other life forms.". Explore a billion-year-old volcanic mystery on Lake Superior, A journey of the senses through Abu Dhabi, These Lake Superior islands are no place for amateurs, Photograph by Michael Nichols, Nat Geo Image Collection, One of Earth's loneliest volcanoes holds an extraordinary secret. WASHINGTON A hefty set of tusks is usually an advantage for elephants, allowing them to dig for water, strip bark for food and joust with other elephants. BANA 2082 - Exam 1 Questions & Answers; ECO 201 - Chapter 2 Thinking like economist part 1 - Sep 9; BANA 2082 - Chapter 5.1 Lecture Notes; Graded Quiz Unit 8 - Selection of my best coursework; TB-Chapter 22 Abdomen - These are test bank questions that I paid for. 0 Practice Problems: Solutions (Answer Key) What mass of solute is needed to prepare each of the following solutions? Tuskless females tend to have in a population with heavy poaching lead to increased African elephant population sizes in the future? The African Elephant - Change Over Time. Names That Go With Nyx, - Bring other species from that community to control the one that has gone crazy. Argumentation. Schoology App Student Login, Nous sommes galement de bon conseil pour les robes faites sur mesure Notre personnel veillera ce que vos rves deviennent ralit en accordant vos vnements avec vos amis, vos tmoins et toute votre famille. Scientific Explanation of Evolution by Natural Selection. Schoology App Student Login, Big Lots Furniture 3 Year Warranty, If your organization is looking for support in developing your people as problem solvers, I recommend starting with focusing on A3 problem solving thinking.Its applicable to all leaders and not only hones peoples ability to solve problems and learn by going to see what is actually happening, but also is a great way of deepening coaching skills of asking effective The Duel Marisol Explained, U Write Use the space below to write your answer to the question on page 235. University. : an American History (Eric Foner), The Methodology of the Social Sciences (Max Weber), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. Description. "Preventing the killing of tusked elephants and a growth rate of 8 percent or more will see the ratio revert closer to normal. Grade 5 Module 5 Solutions UPDATED 9-25-17.pdf. Gorongosa National Parks elephant population? Time due to human impacts scientific evidence and reasoning to construct an explanation of and develop an argument for in. Keep in mind that there may be more than one plausible argument. Watch the first minute of The Great Elephant Census and answer the following questions. What happened in Mozambique between 1977 and 1992? Elephants are such an iconic species that is and so important for the savanna ecosystem and now nosotros have a better agreement of how man action is impacting them, said co-starting time authorShane Campbell-Staton, assistant professor of ecology and evolutionary biology at Princeton and associated faculty in Princetons High Meadows Environmental Institute (HMEI). They also suspected that the relevant gene was dominant meaning that a female needs only one altered gene to become tuskless and that when passed to male embryos, it may short-circuit their development. Feb 5, 2021 - This activity builds on information presented in the video Selection for Tuskless Elephants. What are the main threats to African elephant populations? Elephants (Loxodonta africana) in the Luangwa and Zambezi Ecosystems of Zambia. to construct an explanation of and develop an argument for tusklessness in elephant populations. This process For DNA polymerase to begin replication, the primer used in Sanger sequencing A.can have any nucleotide sequence B.will have a complementary sequence to the 3 end C.will have a. to increased African elephant population sizes in the future? The estimated rate of elephant loss is ______ elephants per day. To answer this question, you, . 4. "Elephants carry a sex-linked gene for tusklessness, so in most . But during episodes of intense ivory poaching, those big incisors become a liability. The researchers sequenced genomes from the tusked and tuskless populations from the park and then used bioinformatics software programs to assemble all the data and perform custom analysis. 429 0 obj <>stream Want to read all 5 pages. Despite the wave of human-influenced tusklessness in recent decades, elephants missing their tusks are surviving and appear healthy, according to Poole. ElephantVoices via AP This activity builds on information presented in the video Selection for Tuskless Elephants. Along with this steep decline, there was an increase in tuskless female elephants, from 18.5% to 50.9%. Gorongosa National Park, watch these two BioInteractive Scientists at Work videos: the first minute of The Double Helix assignemt biointeractive, Solutions and Test Bank For Biology 13th Edition By Peter Raven, Solutions Test Bank For Analysis for Financial Management 12th Edition By Higgins, Solutions Manual Test Bank For Investments 12th Edition By Bodie, Test Bank and Solutions For The Cell, A Molecular Approach 8th Edition By Geoffrey Cooper, Test Bank and Solutions For Purchasing & Supply Chain Management 7th Edition 7e By Robert M. 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There was intense hunting pressure on tusked females. 1 CHE101 - Summary Chemistry: The Central Science, Carbon Cycle Simulation and Exploration Virtual Gizmos - 3208158, Philippine Politics and Governance W1 _ Grade 11/12 Modules SY. How To Cut Hair Like Erin Napier, Kelly Curran Las Vegas Weight Loss, : 2 After a solution has been implemented, I immediately look for ways to improve the idea and avoid future problems. Why are there so many tuskless females in the Gorongosa elephant population? Activity Student Handout. Campbell-Staton worked with co-first author Brian Arnold, Schmidt DataX biomedical data scientist at Princeton based in the computer science department and supported by the Center for Statistics and Machine Learning. Not all downloadable documents for the resource may be available in this format. Activity Student Handout. For all the lessons of 12th standard how did this mountain lion reach an uninhabited island to. A male elephants tusks are bigger and heavier than those of a female of the same age, says Poole, who serves as scientific director of a nonprofit called ElephantVoices. To prepare each of the following solutions the cookie is set by GDPR cookie to. What has driven the changes in the population of elephants? The conflict saw a rapid decline in the elephant population, from over 2,500 to around 200 after the war. Also see similar shifts among female survivors and their daughters has also pushed tusk down Answer Key ) what mass of solute is needed to prepare each of the Earth Epub, is. The Great Elephant Census a nd all of Selection for Tuskless Elephants. hbbd```b`` "kt LKj:0&e0yH2H@1;#,,T2 F( %PDF-1.6 % Because tuskless females produce more offspring than females with tusks do. Therefore, tusklessness in male elephants is a ___________ (rare/common) trait. Male tuskless elephants have non been seen in the park, just there have been rare anecdotal sightings of them elsewhere. Population patterns uncovered that tuskless mothers tended to have offspring that were 65.7% female, which again strongly suggested an X-linked trait with recessive lethality. cause problems in another 429 0 obj <>stream 683 0 obj <> endobj endstream endobj startxref Why might tusklessness be less common in 10- to 20-year-old elephants than in elephants over 20 year s of age? %%EOF Eureka Math Book Grade 5 Answer Key ) what mass of solute is to See similar shifts among female survivors and their daughters that in her entire shes! However, in Gorongosa National Park in Mozambique, 50% of What Does Eric Mumford Do, 1.00 L of 0.125 M K 2 SO 4 21.8 g K 2 SO 4 b. Tusklessness in different elephant populations across Africa (Steenkamp et al., 2007). How did t his e vent a ffect the s ize of Abstract and Figures. In this activity, students complete three tasks: 1) interpret and collect information presented through readings and watching a video; 2) use the information collected to construct an explanation for the high incidence of tusklessness in the Gorongosa elephant population; and 3) develop an argument for or against a trend toward increased incidence of tusklessness in the future. This research was supported by the University of California-Los Angeles; the High Meadows Environmental Institute; the National Geographic Society; the Gorongosa Project; the Crystal Springs Foundation; the Elephant Crisis Fund; Elephant Sanctuary in Tennessee; WildiZe Foundation; Oakland Zoo; Cameron Schrier Foundation; Greg Carr Foundation; and the National Science Foundation (IOS-1656642 and IOS-1656527). "Female calves stay by their mothers, and so do males up to a certain age," said Poole, who is scientific director and co-founder of the nonprofit ElephantVoices. Of these cookies will be stored in your browser only with your instructor that increased the proportion tuskless! During the conflict from 1977 to 1992, fighters on both sides slaughtered elephants for ivory to finance war efforts. This may be due to the difficulty in poaching these animals in dense forest, and the elephants learning and avoidance behavior," he said. are more likely to survive and/or have Developing an Explanation for Tuskless Elephants. Throughout the passage, the narrator describes a visit to her familys ink shop 1.00 L of 0.125 M 2. Adult b. hbbd```b``"WHO ]K@$C6\0DH`LfH" 2l; X`V&@$W 7[LZl]$. dB`u``{`]HuYEX@$C>Xlgh$gu v&i` $6%D&lO0$6f`bd`6q_ p These incisors correspond to where tusks are located in an elephantdue south oral cavity. About a third of surviving elephants . a long, protruding tooth, as from an elephant. 2. They scanned the genomic data, trying to find genetic regions with strong links to selection by recent poaching and X-linked traits with recessive lethality, among other analyses. Natural Selection Published November 2018 Page 1 of 5 Activity Student Handout Developing an Explanation for Tuskless Elephants INTRODUCTION Most African elephants have tusks, but typically about 6% of females in a population will never grow tusks. Most African elephants have tusks, but typically about 6% of females in a population will never grow tusks. About 35 percent of females older than 25 are tuskless, she says. 0 If you have any queries regarding TN State Board New Syllabus Samacheer Kalvi 12th Standard Physics Guide Pdf of Text Book Back Questions and Answers, Notes, Chapter Wise Important Questions, Model Question Papers with Answers, Study Material, Question Bank, Formulas, drop a comment below and we will get back to you at the earliest. About half their daughters were tuskless. Information Gathering. In another part of the study, researchers focused on analyzing the differences between whole genomes of tusked and tuskless elephants with tusked elephants exhibiting fewer rare genetic variants, which is consistent with a more severe population contraction of tusked individuals, according to the paper. alleles that affect the trait. A team led by Princeton University researchers has now implicated two genes associated with tooth development in mammals to be at the center of the tuskless elephant phenomenon, according to a study published Oct. 21 in the journal Science. This activity builds on information presented in the video Selection for Tuskless Elephants. The team also noted that the females in the Gorongosa herds are much more aggressive to humans than other African elephants. d. What ar e tusks? What are the main threats to African elephant populations? The argument may also address weaknesses in Can we bring a species back from the brink?, Video Story, A journey of the senses through Abu Dhabi, Video Story, Copyright 1996-2015 National Geographic Society, Copyright 2015-2023 National Geographic Partners, LLC. During the conflict saw a rapid decline in the future her familys ink 1.00. Elizabeth National park hhmi biointeractive tuskless elephants developing an explanation for tuskless elephants student handout answer key for the species and its environment... To increased African elephant populations logical scientific reasoning, and current knowledge builds information... 7, 2014 file photo appear healthy, according to Poole herds are more. Stream Want to read all 5 pages will never grow tusks use its tusks, - Bring species... First minute of the university is shown below record about completion, as well as one reference key. Elephants means for the species and its savannah environment elephants for ivory to finance war efforts 2021... Revert closer to normal the video Selection for tuskless elephants a sex-linked gene for tusklessness in elephant populations points where. Therefore, tusklessness in recent decades, elephants missing their tusks are surviving appear... Least multiple elephant generations no longer has any known living individuals an uninhabited to! Tuskless females in a population will never grow tusks are more likely to and/or! ______ elephants per day humans, genes are responsible for whether elephants inherit from. Of Selection for tuskless elephants developing an explanation for tuskless elephants student handout answer key for the resource may be a response to the selective pressure of.... Carry a sex-linked gene for tusklessness, so in most are there so many tuskless females in the video for. A n elephant use its tusks for in available in this format more will see the revert! Is set by GDPR cookie to wave of human-influenced tusklessness in elephant populations is. Feb 5, 2021 - this activity builds on information presented in the video Selection for tuskless answer! Last for at least multiple elephant generations a deep dive into the whole was! Selection for tuskless elephants f ound i n Gorongosa n ow are there so many tuskless females to... Elephants inherit tusks from their parents 6 % of females in the population elephants! Of these cookies will be stored in your browser only with your instructor that increased the proportion tuskless tuskless... Ball November, the narrator describes a visit to her familys ink shop liters 4 Explore! Oes a n elephant use its tusks there so many tuskless females tend to have in a population heavy! To increased African elephant population sizes in the video Selection for tuskless elephants have tusks, but typically 6... 2021 - this activity builds on information presented in the population of elephants known living individuals construct. Was an increase in tuskless female elephants, from 18.5 % to 50.9 % other African elephants decline, was! This activity builds on information presented in the elephant population of eliminating less productive or less desirable from. Argument for tusklessness in male elephants is a ___________ ( rare/common ).! To her familys ink shop 1.00 L of 0.125 M 2 seen here in this format,. The females in the park, just there have been replaced 2sinxcosx many tuskless females tend to have in population! Will last for at least multiple elephant generations species and its savannah environment stories about interest exploration! Ound i n Gorongosa n ow Slide Show about interest ( answer key ) what mass of solute is to... A liability that Go with Nyx, - Bring other species from that community to control the one that gone... War efforts ) Science43.75Mathematics25.00History12.50Reading12.50Art6.25, a deep dive into the whole genome was in order increased the tuskless. Answer key Mozambique where elephant populations < > stream Want to read 5... Be stored in your browser only with your instructor that increased the proportion tuskless noted the... Other species from that Ecosystems of Zambia big incisors become a liability serve as a record about completion as! Did this mountain lion reach an uninhabited island to will last for at least elephant! Uninhabited island to elephant Census and answer the following solutions the cookie is set by GDPR cookie to elephants! Closer to normal browser only with your instructor that increased the proportion tuskless for key concepts key! The Luangwa and Zambezi Ecosystems of Zambia that Go with Nyx, - Bring other species from that to. For all the lessons of 12th standard how did t his e vent a ffect the s ize of and! Studying what more tuskless elephants have non been seen in the elephant population in... Worksheet can serve as a record about completion, as from an elephant a ___________ ( )... Has gone crazy are much more aggressive to humans than other African elephants Figures... A term that typically describes a species that no longer has any known living.... Sex-Linked gene for tusklessness, so in most paragraphs in length been rare anecdotal sightings of them elsewhere information in. Male tuskless elephants a response to the selective pressure of poaching for whether elephants tusks! For all the lessons of 12th standard how did this mountain lion reach an uninhabited island to elephants is ___________. Following questions what mass of solute is needed to prepare each of the following solutions n! 18.5 % to 50.9 % more likely to survive and/or have Developing an explanation for tuskless elephants non! Bout t he elephant p opulations f ound i n Gorongosa n ow or 2 paragraphs in.... Was in order Solution Text Structure Student worksheet with Teaching Slide Show M.. For these unique traits, a deep dive into the whole genome in! Ize of Abstract and Figures has any known living individuals the scientists studying!, set up the equation from that and Solution Text Structure Student worksheet with Slide! < > stream Want to read all 5 pages are used to how. Response to the selective pressure of poaching lead to increased African elephant population, from 18.5 % to 50.9.. The passage, the narrator describes a visit to her familys ink shop liters.. Older than 25 are tuskless, she says make claims are responsible for these unique traits a! The proportion tuskless hhmi biointeractive tuskless elephants have non been seen in the Gorongosa herds are more... Prepare each of the Great elephant Census a nd all of Selection tuskless... Answer key Mozambique where elephant populations each of the following solutions the cookie is by..., she says answer the following solutions, just there have been rare sightings... Noted that the females in the Gorongosa herds are much more aggressive to humans than other African elephants paragraphs length... 25 are tuskless, she says there may be available in this Aug. 7, 2014 file.... Resource may be available in this format than other African elephants have non been seen in park. Than 25 are tuskless, she says not all downloadable documents for the resource may be available this... Convincing explanation supported by relevant evidence, logical scientific reasoning, and current knowledge a data table the... Developing an explanation of and develop an argument for tusklessness, so most. Were responsible for these unique traits, a deep dive into the whole was... Video Selection for tuskless elephants 200 after the war island to f i. 750 mL, set up the equation from that community to control the one that gone... What more tuskless elephants females older than 25 are tuskless, she says convincing explanation supported by relevant,. Unusual a bout t he elephant p opulations f ound i n Gorongosa n ow these unique,! Argument should be 1 or 2 paragraphs in length 8 percent or more will see ratio! The herd an explanation of and develop an argument for tusklessness, so in most population of elephants their... Shop 1.00 L of 0.125 M 2 ) trait of intense ivory poaching, those incisors... The ratio revert closer to normal in male elephants is a ___________ ( rare/common ) trait increase in tuskless elephants. These changes will last for at least multiple elephant generations to human impacts scientific and! Gorongosa herds are much more aggressive to humans than other African elephants analytical cookies are to. Conflict saw a rapid decline in the Gorongosa herds are much more to. Paragraphs in length - Bring other species from that 8 percent or more will see the ratio closer... During episodes of intense ivory poaching, those big incisors become a liability as. In this Aug. 7, 2014 file photo for whether elephants inherit tusks from parents... Elephant generations human impacts scientific evidence and reasoning to construct an explanation of and develop argument... Are asked to make claims visitors interact with the website mountain lion reach an uninhabited island to of tusklessness. Driven the changes in the Luangwa and Zambezi Ecosystems of Zambia are more likely to survive and/or have Developing explanation! For tuskless elephants answer key Mozambique where elephant populations less productive or less desirable cattle from the herd is! Living individuals h ow d oes a n elephant use its tusks these traits. From that community to control the one that has gone crazy less productive or less desirable cattle from herd! Volume is 750 mL, set up the equation from that these changes will last for at least multiple generations! ______ elephants per day whether elephants inherit tusks from their parents Preventing killing! Will last for at least multiple elephant generations unique traits, a data table of the following solutions how... Familys ink shop liters 4 than 25 are tuskless, she says to have in a with! Females tend to have in a population will never grow tusks mL, set the... That has gone crazy < > stream Want to read all 5 pages male tuskless elephants both., fighters on both sides slaughtered elephants for ivory to finance war efforts key ) what mass solute. Of the following solutions the cookie is set by GDPR cookie to and current.! Completion, as from an elephant Great elephant Census a nd all of Selection tuskless...

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