Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 22, Problem 6TYU
Some biologists summarize evolution by natural selection with the phrase “mutation proposes, selection disposes.” Mutation is a process that creates heritable variation. Explain what the phrase means.
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Students have asked these similar questions
Discuss the significance of mutations and explain the role of the environment in the evolutionary process. (Hint: Consider Lenski's study and what is demonstrated. Do not re-tell Lenski’s study)
Which one of the following statements best describes the difference between mutation
and substitution in a population?
Mutation is the origin of a new allele in an individual organism, and substitution is the
evolutionary replacement of one allele by another.
Mutation is the origin of a deleterious allele, and substitution is the increase in frequency of an
advantageous allele by positive selection.
Mutation is change in the DNA sequence within a functional gene, and substitution involves
nucleotide changes in noncoding regions of the genome.
In your group, consider the following statement: "Mutations are random, natural selection is not." What does that statement mean?
Chapter 22 Solutions
Biological Science (7th Edition)
Ch. 22 - True or false? Some trails are considered...Ch. 22 - 3. Trails that are derived from a common ancestor,...Ch. 22 - Some biologists summarize evolution by natural...Ch. 22 - Prob. 7TYUCh. 22 - SOCIETY Explain why the overprescription of...Ch. 22 - Prob. 10TYPSSCh. 22 - How can natural selection on mouse color be...Ch. 22 - Apply Darwin’s four postulates to a population of...Ch. 22 - 14. PROCESS OF SCIENCE A team lead by evolutionary...Ch. 22 - 16. PROCESS OF SCIENCE When a statistical test was...
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- Review darwin's theory of natural selection. Write a paragraph reflection explaining a) what you learned from the evidence of revolution and b.) The connections you made with what you learn about darwin's theory of natural selection and how meet mutations play an important role in the natural selection.arrow_forwardThe raw material for evolution is random mutation. Discuss whether or not you view evolution as a random process.arrow_forwardDescribe the signiicance of mutations in terms of evolution.arrow_forward
- Describe the four basic causes of evolution: natural selection, mutation, genetic drift, and gene flowarrow_forwardExplain the reasoning behind the statement “Evolution is not goal oriented.”arrow_forwardBlack lava rocks only appeared in the desert about 1000 years ago. If the first dark-colored rock pocket mouse had a 10% advantage, about how long would it have taken for nearly all of them to have dark-colored fur? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 10,000 years. 1000 years. 100 years. It depends on how fast new mutations occur. This cannot be estimated because evolution is random. Fullscreenarrow_forward
- What is an adaptation in the context of evolution? A heritable trait that was favored by natural selection. choose one of the following. A random genetic mutation that causes a new trait in a population. The ability of an individual to adjust to their environment as it changes..arrow_forwardCompare and contrast the neutral theory of evolution and the Darwinian (i.e., selectionist) theory of evolution. Explain why the neutral theory of evolution is sometimes called non-Darwinian evolution.arrow_forwardDiscuss at least two reasons why we cannot consider evolution by natural selection progressive.arrow_forward
- In the replica plate experiment, it shows that mutations are random. However, certain environmental stresses (such as high temperature, high salt, and low pH) can increase the mutation rate. QUESTIONS: Does increasing the mutation rate increase the probability that an individual mutation will be adaptive?arrow_forwardWhich statement about genome evolution is false? Mutations at the ends of introns are less likely than in the middle of an intron. Synonymous mutations rates are much higher than nonsynonymous mutation rates. Psuedogenes show high rates of mutations. Comparison of the mutational change in a specific gene can be used as a molecular clock to date evolutionary events between species. Evolution in a gene sequence will occur the fastest in regions that have the greatest effect on function.arrow_forwardBriefly 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_forward
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