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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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Textbook Question
Chapter 21.1, Problem 2CC
Of all the mutations that occur in a population, why do only a small fraction become widespread?
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Students have asked these similar questions
Between gene mutation and structural mutations, which of the two types of mutation would likely persist in the population?
What is genetic flow?
A) Genes changing due to mutation
B) Random loss of genes in a small population
C) Movement of genes between different populations
Consider the following estimates:(a) There are 7 x 109 humans living on this planet.(b) Each individual has about 20,000 (0.2 * 105) genes.(c) The average mutation rate at each locus is 10-5.How many spontaneous mutations are currently present inthe human population? Assuming that these mutations areequally distributed among all genes, how many new mutationshave arisen in each gene in the human population?
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which type of mutation doesnt affect the ability of an organism to pass on its alleles to the next generation? a) beneficial mutation b) positve mutation c) deleterious mutation d) neutral mutation I have also attached a question down below. Please let me know if there is are any mistakes as I have a test tomorrowarrow_forwardIf the rate of mutation is 10–5 per gene per cell generation, how many new mutations per gene would you expect in a population of 1 million bacteria?arrow_forwardWhy are some lethal recessive mutations such as Tay-Sachs disease not eliminated from a population?arrow_forward
- (1) A very large population of birds is living on an island in the Pacific ocean. (2) There are no birds from the same species coming into the island or leaving the island. (3) Each member of the population survives and reproduces at the same rate. (4) When birds are choosing their mates, they choose based on how colorful their feathers are. (5) There are no new mutations arising in the population. Is it likely that this population is in Hardy-Weinberg equilibrium? If not, select the sentence that led you to conclude this. If yes, indicate that below. O Yes, this population is in H-W equilibrium. O Sentence 3 O Sentence 4 Sentence 2 O Sentence 1 O Sentence 5arrow_forwardIf the rate of mutation is 10–5 per gene, how many new mutations per gene would you expect in a population of 1 million bacteria?arrow_forwardHow does a gene drive spread through a population?arrow_forward
- 1a) In a very large population, if the forward and reverse mutation rates are exactly the same, how would you expect the frequency of an original, non-mutated allele to change in the population over time? Will the population eventually achieve an equilibrium value of the frequency of the non-mutated allele? b) What if the forward mutation rate is one order of magnitude larger (e. 10X) than the reverse mutation rate? Do you expect the frequency of the original, non-mutated allele to increase, decrease, or stay the same over time? c) If the population size is considerably smaller, does this change your expectations for changes in the frequency of the original, non-mutated allele over several generations?arrow_forwardWhat is the most important cause of genetic variation? Viruses, replication errors, or mutagens?arrow_forwardDiscuss how the finite size of populations means that new mutations eventually will be either lost or fixed.arrow_forward
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY