Description of Species: The brown pelican is the smallest member of seven species of pelicans. C. The mosquito population needed to evolve DDT resistance in order to avoid extinction. The amount of webbing on a duck's feet is a heritable trait. Birds that inherited the beneficial random mutations associated with the webbed feet trait had more chances to survive and reproduce, passing this trait to the next generations. To test this hypothesis, the researcher tagged 20 lizards with long horns and 20 lizards with short horns in each of two locations: Desert Valley, where there are no predatory birds, and Cactus Corner, where there are predatory birds. A dwarf red snapdragon in crossed with a plant heterozygous at each locus, Which of the following will be true of the offspring? 189. Horned lizards use their horns to defend against predatory birds. At the same locus associated with the Mc1r gene in dark colored mice, the DNA sequence reads AGG TGG ACG. Ducks are aquatic birds. 2003-2023 Chegg Inc. All rights reserved. line-height: 29px; They evolved from a common ancestor. font-size: 32px; This observation led her to hypothesize that longer horns offer more protection against predation than do shorter horns. Your classmate crosses two pea plants but can't remember what their genotypes were. margin-top: 0; A plant with pink flowers is crossed with a plant with white flowers. After many years the aquatic food sources were more plentiful and after many generations, almost all ducks had more webbing on their feet. Webbed Feet: Homologous Trait or Analogous Trait? Individuals of this species varied in the amount of webbing in their feet, with some individuals having more webbing and some having less. Many generations later, almost all ducks had more webbing on their feet. C. Most ducks had less webbing on their feet than their parents. padding: 0 !important; (b) Appeared in ducks because of a chance mutation. /* ]]> */ font-weight: 700; Explanation: Many generations later, almost all ducks had more webbing on their feet. Horned lizards use their horns to defend against predatory birds. D. iWhich of the following is true? How is this best explained? } text-align: center; krishnamaharana9647 is waiting for your help. c. disruptive selection . 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C. He thought that characters developed within an individual as a result of use or disuse, and that these changes were then passed on to offspring, Over several decades, Russian foxes have been selectively bred to produce tame and aggressive lines. What agents of evolution could cause a decrease in the frequency of allele b? If it were anything like a normal math test, the weakest test-takers would miss There are not any nerves in the duck's webbed feet. You can specify conditions of storing and accessing cookies in your browser. According the theory of natural selection, where did the variations in body size among the three species of lizards most likely come from? We do not charge our users any extra fees or interest for exchange services we provide. Biologists believe that ducks evolved from land birds that did not have webbed feet. Ducks are popular for their distinctive triangular, webbed feet, but they have toe bones just like the other birds. 10/10 would recommend. Second: The evolution of living things is powered by natural processes. B. Mosquitoes in the population learned to adapt to the high levels of DDT in the environment. padding: 0 20px; Ancestra These sweet pooches were bred to handle the icy waters and the marshy banks of the Great Lakes region in the US. What can create new combinatios of alleles at dierent locati on which selection can act. Plstico Elstico, un programa de msica y canciones de Pacopepe Gil: Power Pop, Punk, Indie Pop, New Wave, Garage An international team of palaeontologists has found remains of some 50 specimens of a bird thought to be closely related to the last common ancestor of today's birds. 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. June 16, 2022. Scientific name: Hydrochoerus hydrochaeris. For example, Baleen whales have a pelvic bone that serves no obvious function, an example of a ____________. Appeared in ancestral ducks because they lived in water and needed webbed feet to swim. Which of the following is the most appropriate way to determine how closely related two groups are using an evolutionary tree? (a) Appeared in ancestral ducks because they lived in water and needed webbed feet to swim. A. The genotypic ratio is and the phenotypic ratio is. 100 snails of each type were exposed to the parasite and the number of survivors counted: RR-80, RS-40, SS-20. School University of Illinois, Urbana Champaign; Course Title BIOC 110; Uploaded By DrElectron5206. while webbed feet were evolving in ancestral ducks quizlet. Consider the following hypothetical scenario: An ancestral species of duck had a varied diet that included aquatic plants and terrestrial plants and insects. Rhesus monkeys and gorillas have stereoscopic vision, which allows them to better visually gauge distances while hunting and moving through tree canopies. Filling a gap in the evolution of The amount of webbing on a ducks feet is a heritable trait.Q6.8. margin: 1em 0; B. while webbed feet were evolving in ancestral ducks quizlet. display: inline !important; /* <\/i>"}; line-height: 21px; A. background: none !important; Coots have lobate feet, where the toes have a series of webbed lobes that open when the foot is pushed backwardsmuch like the base of a push pole used by duck hunters to traverse the marsh. body.responsive #page-wrapper { However, they also had lungs that they used to breathe oxygen. Another locus influences flower color. 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 However, the Bible gives us a framework for explaining dinosaurs in terms of thousands of years of history, including the mystery of when they lived and what happened to them. /* ]]> */ The GMAT Quant section has 37 questions. vertical-align: -0.1em !important; high point central football Plstico Elstico. .panel-grid-cell .widget-title { While ducks were evolving webbed feet: (a) With each generation, most ducks had about the same amount of webbing on their feet as their parents. Which of the following is REQUIRED for the process of evolution by natural selection to occur? } Were the solution steps not detailed enough? 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. (b) With each generation most ducks had any bit more webbing on their feet than their parents. [CDATA[ */ The populations of ducks evolved webbed feet because: (a) The more successful ducks adapted to their aquatic environment. !function(e,a,t){var n,r,o,i=a.createElement("canvas"),p=i.getContext&&i.getContext("2d");function s(e,t){var a=String.fromCharCode;p.clearRect(0,0,i.width,i.height),p.fillText(a.apply(this,e),0,0);e=i.toDataURL();return p.clearRect(0,0,i.width,i.height),p.fillText(a.apply(this,t),0,0),e===i.toDataURL()}function c(e){var t=a.createElement("script");t.src=e,t.defer=t.type="text/javascript",a.getElementsByTagName("head")[0].appendChild(t)}for(o=Array("flag","emoji"),t.supports={everything:!0,everythingExceptFlag:!0},r=0;r
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