Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 23.1, Problem 2CC
Ot all the mutations that occur in a population, why do only a small fraction become widespread?
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Why is a random mutation more likely to be deleterious than beneficial?
With regard to mutations, what is meant by the terms“harmful,” “beneficial,” and “neutral”? Why it issometimes an oversimplification to consider a mutation aseither harmful, beneficial, or neutral?
. In a population of 50,000 diploid individuals, what isthe probability that a new neutral mutation will ultimately reach fixation? What is the probability that itwill ultimately be lost from the population?
Chapter 23 Solutions
Campbell Biology (11th Edition)
Ch. 23.1 - Explain why genetic Variation within a population...Ch. 23.1 - Ot all the mutations that occur in a population,...Ch. 23.1 - MAKE CONNECTIONS If a population stopped...Ch. 23.2 - A population has 700 individuals, 85 of genotype...Ch. 23.2 - The frequency of allele a is 0.45 for a population...Ch. 23.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 23.3 - In what sense is natural selection more...Ch. 23.3 - Distinguish genetic draft from gene flow in terms...Ch. 23.3 - WH AT IF? Suppose two plant populations exchange...Ch. 23.4 - What is the relative fitness of a sterile mule?...
Ch. 23.4 - Explain why natural selection is the only...Ch. 23.4 - Prob. 3CCCh. 23 - Typically. most of the nucleotide variabillity...Ch. 23 - Is it circular reasoning to calculate p ond q from...Ch. 23 - Would two small, geographically isolated...Ch. 23 - How might secondary sex characteristics in males...Ch. 23 - Natural selection changes allele frequencies...Ch. 23 - Prob. 2TYUCh. 23 - Prob. 3TYUCh. 23 - There are 25 individuals in population 1, all with...Ch. 23 - Prob. 5TYUCh. 23 - EVOLUTION CONNECTION Using at least two examples,...Ch. 23 - SCIENTIFIC INQUIRY INTERPRET THE DATA Researchers...Ch. 23 - Prob. 8TYUCh. 23 - SYNTHESI2E YOUR KNOWLEDGE This kettle lake forracd...
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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
- 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?arrow_forwardWhat are the factors that influence the mutation rates of human genes?arrow_forwardIn most cases, the rate of synonymous substitution for a gene is higherthan the rate of nonsynonymous substitution. Sometimes, however, therate of nonsynonymous substitution is higher. When would you expectto see this? What might bring it about?arrow_forward
- You have sequenced a few individuals in the population and found out that there are only two alleles in the population: one is GGGTCC and the other GGGTAC. You also knew that the DNA sequence encodes two amino acid residues. The mutation responsible for the difference is an insertion mutation a transition mutation nonsynonymous mutation a neutral mutation a silent mutationarrow_forward(a) Mutations have many different causes and effects. Outline how mutations can affect the gene pool of a population. (b) Draw a table that identifies THREI types of mutagens, describes how each mutagen causes mutation and describes the effects of each mutagen.arrow_forwardexplain the statement Duplications Provide Extra Gene CopiesThat Can Acquire New Functionsarrow_forward
- Would the rate of deleterious or beneficial mutations be a good molecular clock? Why or why not?arrow_forwardWhat is the key component(s) of usher syndrome.A) The Effect of mutation and Hot-spots of mutation?B) What happens when things go wrong?arrow_forwardWhy are some lethal recessive mutations such as Tay-Sachs disease not eliminated from a population?arrow_forward
- Explain the concept of inherited molecular disease ?arrow_forwardWhat is genetic flow? A) Genes changing due to mutation B) Random loss of genes in a small population C) Movement of genes between different populationsarrow_forwardThe use of nucleotide sequence data to measure genetic variabilityis complicated by the fact that the genes of many eukaryotesare complex in organization and contain 5' and 3' flankingregions as well as introns. Researchers have compared thenucleotide sequence of two cloned alleles of the y-globin gene from asingle individual and found a variation of 1 percent. Those differencesinclude 13 substitutions of one nucleotide for anotherand three short DNA segments that have been inserted in oneallele or deleted in the other. None of the changes takes placein the gene’s exons (coding regions). Why do you think this isso, and should it change our concept of genetic variation?arrow_forward
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