Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Chapter 21, Problem 8TYU
FOCUS ON EVOLUTION
Using at least TWO examples, explain how the process of evolution is revealed by the imperfections of living organisms.
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Consider the concept of evolution. Give some reasons why it is impossible to evolve perfect organisms through this process.
Hello! I have a discussion tommorow with my classmates, and the prompt says like this:
Discuss whether changes to an organism's physical environment are likely to result in evolutionary change. Use examples to support your reasoning. Second, using at least two examples, explain how the process of evolution is revealed by the imperfections of living organisms.
Please help with the following prompt using as much details as possible.
"One argument that is often made to invalidate evolution by natural selection is that some features of an organism are so complicated and need to work together in order to precisely function that it is impossible for such structures to arise from simpler ones by the random processes of mutation and selection: complicated design requires a designer. Using evidence from real organisms, explain how a complicated structure can arise from a simpler ancestral feature. You can use either an anatomical feature or molecular one."
Chapter 21 Solutions
Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
Ch. 21.1 - Explain why genetic variation within a population...Ch. 21.1 - Of all the mutations that occur in a population,...Ch. 21.1 - Prob. 3CCCh. 21.2 - A population has 700 individuals, 85 of genotype...Ch. 21.2 - The frequency of allele a is 0.45 for a population...Ch. 21.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 21.3 - In what sense is natural selection more...Ch. 21.3 - Distinguish genetic drift from gene flow in terms...Ch. 21.3 - WHAT IF? Suppose two plant populations exchange...Ch. 21.4 - What is the relative fitness of a sterile mule?...
Ch. 21.4 - Explain why natural selection is the only...Ch. 21.4 - Prob. 3CCCh. 21 - Natural selection changes allele frequencies...Ch. 21 - No two people are genetically identical, except...Ch. 21 - Sparrows With average-sized w1ngs survive severe...Ch. 21 - If the nucleotide variability of a locus equals...Ch. 21 - There are 25 individuals in population 1, all with...Ch. 21 - A fruit fly population has a gene with two...Ch. 21 - FOCUS ON EVOLUTION Using at least TWO examples,...Ch. 21 - Prob. 9TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
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- Instruction: Explain your answer. Scientific Thought: "In evolutionary relationships using the evidences of evolution, the more closely related the species are, the more similar their DNA sequences. Provide concrete evidence through illustration to prove your answer. You may use other ways to show your answer.arrow_forwardWRITE ABOUT A THEME: EVOLUTION In a short essay(100–150 words), discuss Darwin’s view of how natural selectionresulted in both unity and diversity of life on Earth. Includein your discussion some of his evidence. (For help in writinggood essays, see “Writing Tips and Rubric” in the Study Area ofMasteringBiology under “Additional Resources.”)arrow_forwardExplain the main theme of evolution: “unity in diversity”.arrow_forward
- State 1 of the five pieces of evidence for evolution. Then, briefly explain how this provides support for the theory of evolution and increases our understanding of human evolution.arrow_forwardEvolution, which involves genetic changes in a population of organisms over time, is often described as the unifying theme in biology. Discuss how evolution is unifying at the molecular and cellular levels.arrow_forwardWhy is intelligent design (ID) a flawed argument? Select the statement that is FALSE. There is no way through experiments or observations to falsify the hypothesis of an Intelligent Designer. ID assumes that each molecular machinery is built from scratch, which is not true; existing proteins are often re-used. OID and evolution are both valid hypotheses, but over the years we have found more evidence pointing toward evolution. O ID assumes that systems are irreducibly complex, and that individual components cannot be removed, even though several examples exist of 'irreducibly complex' systems being reduced. en 0 3 $ 35 % ^ 6 18 & * 8 9 44 Indoor Playground with wheelsarrow_forward
- Briefly discuss the differences in how a selectionist (one that believes that Natural Selection is a strong evolutionary force) and a neutralist (one that believes that genetic drift is a strong evolutionary force) views the following: molecular clock, evolution of coding sequences, evolution of "pseudogenes".arrow_forwardNeed help List the four types of evidence that exist in support of evolution.Explain.arrow_forwardExplain: "The evidence for evolution pours in,not only from geology, paleontology, biography and anatomy,but of course from molecular biology and every other branch of the life sciences"arrow_forward
- Why does evolution matter now? List 5 facts of one of the events in the evolution timeline. Focus on what was discovered, how the evidence was found and when scientists learned about these facts.arrow_forwardCreate a recipe for evolution. In your recipe, include the ingredients (all of the elements that must be present for evolution to occur) and the procedure (a description of how the ingredients work together to drive evolution).arrow_forwardEvolutionary Thought: answer the question in essay form. Explain the benefits, effects, and contributions of the Five Agents of Evolutionary Changearrow_forward
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