EBK CAMPBELL BIOLOGY IN FOCUS
2nd Edition
ISBN: 8220101459299
Author: Reece
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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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 tomorrow
between gene mutation and structural mutations, which of them would likely persist in the population? why?
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
Chapter 21 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
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
- 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_forwardWhy are some lethal recessive mutations such as Tay-Sachs disease not eliminated from a population?arrow_forwardYou have already learned that mutation is one source of variation in a population. Based on what you have just seen, what is a second source of variation?arrow_forward
- How does a gene drive spread through a population?arrow_forwardOne unexpected result of the sequencing of the human genome was the finding that mutations in a single gene can be responsible for multiple distinct disorders. How do you think mutations in a single gene can have such diverse effects?arrow_forwardA neutral mutation arises in a diploid population of 10,000 individuals. Use this information to answer the following questions. a) What is the probability that the neutral allele goes to fixation? b) Assuming that the neutral mutation eventually goes to fixation, what is the expected time to fixation (in generations)?arrow_forward
- What is the reason behind the transferring of genetic factors from the one generation to another generation?arrow_forwardDiscuss how the finite size of populations means that new mutations eventually will be either lost or fixed.arrow_forwardSome populations change noticeably in form within a hundred years. If only one gene in every 200,000 mutates and if most mutations are harmful, how is such change possible?arrow_forward
- Why is artificial selection or selective breeding considered a form of genetic engineering?arrow_forwardIn 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_forwardIn order to perform mutation on an organism, we need: 1. A mutation probability - usually a "small" value 2. A crossover point 3. The number of organisms in the population 4. Both a and barrow_forward
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