(a) With each generation, most ducks had about the same amount of webbing on their feet as their parents. Biologists believe that ducks evolved from land birds that did not have webbed feet. /* */ While webbed feet were evolving in ancestral ducks, with each generation:Most ducks had about the same amount of webbing on their feet as their parents.Most ducks had more webbing on their feet than their parents.Most ducks had less webbing on their feet than their parents.The amount of webbing on ducks feet had no relationship with the amount their parents had.Q6.9. In humans it is considered unusual, occurring in approximately one in 2,000 to 2,500 live births. } e. homology . Some of them live in freshwater habitats while others live in saltwater. The trait of webbed feet in ducks: (a) Appeared in ancestral ducks because they lived in water and needed webbed feet to swim. Their feet are webbed and this trait makes them fast swimmers. How is this best explained? A researcher observed that lizards living in areas with predatory birds have longer horns than those in areas with no predatory birds. Arcaeopteryx and Basiolosaurus both represent _____________ species, as they had characteristics of both ancestral and descendant species. The duck's webbed feet aid in its ability to navigate bodies of water. A major difference among finch species is in their beaks: both size and shape vary greatly.Assume that a population of one of these finch species is undergoing evolution by natural selection with respect to beak size and shape. Get the live rate with our exchange calculator, a . Horned lizards use their horns to defend against predatory birds. C. Most ducks had less webbing on their feet than their parents. Use the following passage to answer the next two. bird species, including the webbed feet of ducks and penguins, most songbirds (such as sparrows and weavers) and pigeons, buzzards, vultures, eagles and gamebirds. The ape line is derived from the a. heart outlined. Which of the following is REQUIRED for the process of evolution by natural selection to occur? Biologists believe that ducks evolved from land birds that did not have webbed feet. 14) The following are a series of steps in transcription, RNA processing, and translation: l) translation begins at the start codon, 2) translation ends at the stop codon, 3) one strand of DNA is copigdnto the complementary nucleotides of a mRNA molecule, 4) introns are cleaved off and discarded, exons are joined together. Gibbon and orangutan Norman Jou-jou Marbury, Most ducks had more webbing on their feet than their parents. The graphs below represent her findings.What can you conclude from the researchers results?The hypothesis that longer horns offer greater protection against predation is supported.The hypothesis that longer horns offer greater protection against predation is NOT supported.The experiment is well designed, but the results are inconclusive about the hypothesis.The experiment is not well designed to test the hypothesis. a. genetic drift . Different finch species live on different islands. Webbed toes is the common name for syndactyly affecting the feet. Their feet are webbed and this trait makes them fast swimmers. . Gallbladder stone case study. 2. It is likely that ducks developed webbed feet because ducks need webbed feet for e cient swimming. This attempt to explain the development of webbed feet in ducks most nearly matches the theory of evolution proposed by A. Jean Lamarck B. Charles Darwin C. Gregor Mendel D. Francis Crick 3. Life On Top, } .panel-grid-cell .widget-title { Webbed feet are ideal for birds that swim, on the water's surface or under. #footer-widgets .widget { width: 25%; } Charles Clinkard Returns, This adaptation is primarily found in semiaquatic species, and has convergently evolved many times across vertebrate taxa. In a population in Hardy-Weinberg, there are two alleles at a single locus and one allele is dominant over the other. Choose all that apply. While webbed feet were evolving in ancestral ducks, with each generation: ISESCO While webbed feet were evolving in ancestral ducks, with each generation:Most ducks had about the same amount of webbing on their feet as their parents.Most ducks had more webbing on their feet than their parents.Most ducks had less webbing on their feet than their parents.The amount of webbing on ducks feet b) While ducks were evolving webbed feet: With each generation, most ducks had about the same amount of webbing on their feet as their parents. background-color: #eee; var cnArgs = {"ajaxUrl":"https:\/\/www.fondation-fhb.org\/wp-admin\/admin-ajax.php","nonce":"914110b2e1","hideEffect":"fade","position":"bottom","onScroll":"0","onScrollOffset":"100","onClick":"0","cookieName":"cookie_notice_accepted","cookieTime":"2592000","cookieTimeRejected":"2592000","cookiePath":"\/","cookieDomain":"","redirection":"0","cache":"0","refuse":"0","revokeCookies":"0","revokeCookiesOpt":"automatic","secure":"1"}; the proportion of finches having different beak sizes/shape changes across generation, Blackbird populations in different Maryland towns have different frequencies for the two reside at a single locus. display: none; #colophon #theme-attribution, #colophon #site-info { It swam like a duck. A. Node Malthus provided Darwin with the idea that populations have the potential to grow faster than can be supported by local resources, LLQP Module 1 (Ethics & Professional Practice). B. While webbed feet were evolving in ancestral duck, With each generation: Most ducks had about the same amount of webbing on their feeet as their parents. If there is NO VARIATION in shell thickness within a population of snails, and no mutations occur, what happens to shell thickness in response to crab predation? c. disruptive selection . Consider the following hypothetical scenario: An ancestral species of duck had a varied diet that included aquatic plants and terrestrial plants and insects. One common adaptation is webbed feet. Individuals of this species varied in the amount of webbing in their feet, with some individuals having more webbing and some having less. B. (function () { Question: Use the following passage to answer the next two questions. The dodo is the tragic symbol of bird extermination. She returned every week for 12 weeks to measure survival of tagged lizards. The amount of webbing on ducks' feet had no relationship with the amount their parents had. Lots of leg bristles, striped wings, red eyes Biologists believe that ducks evolved from land birds that did not have webbed feet. font-size: 20px; } If it were anything like a normal math test, the weakest test-takers would miss While webbed feet were evolving in ancestral ducks, with each generation: Most ducks had about the same amount of Question: Ducks are aquatic birds. The DNA sequence AGG TGG GAG makes up a portion of the Agouti gene in heffalumps. C. There must be a sudden environmental change. Many generations later, almost all ducks had more webbing on their feet. Charles Clinkard Returns, while webbed feet were evolving in ancestral ducks quizlet. Some of them live in freshwater habitats while others live in saltwater. Required fields are marked *, UNESCO , s we see across all life and the amazing diversity of that life. Use the information below to answer question 3. The trading volume for Tether in the past 24 hours has been USD 176,316,748,371. 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