Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 19, Problem 11RQ
When closely related individuals mate with each other, or inbreed, the offspring are often not as fit as the offspring of two unrelated individuals. Why?
- Close relatives are genetically incompatible
- The DNA of close relatives reacts negatively in the offspring
- Inbreeding can bring together rare, deleterious mutations that lead to harmful
phenotypes - Inbreeding causes normally silent alleles to be expressed.
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When closely related individuals mate with each other, or inbreed, the offspring are often not as fit as the offspring of two unrelated individuals. Why? a. Close relatives are genetically incompatible. b. The DNA of close relatives reacts negatively in the offspring. c. Inbreeding can bring together rare, deleterious mutations that lead to harmful phenotypes. d. Inbreeding causes normally silent alleles to be expressed.
Boxers are far more inbred than poodles. Why does that inbreeding make the former a better target for genetic studies of disease than the latter?
There is some evidence that selection on white fur color in cats resulted in unintentional selection on hearing abilities. About 40% of white-furred, blue-eyed cats are also deaf. It turns out the gene responsible for pigmentation here also affects the fluid in the ear canals. This is most consistent with what phenomenon in genetics?
Inbreeding
Linkage
Heritability
Pleiotropy
Chapter 19 Solutions
Biology 2e
Ch. 19 - Figure 19.2 In plants, violet flower color (V) is...Ch. 19 - Figure 19.4 Do you think genetic drift would...Ch. 19 - Figure 19.8 In recent years, factories have become...Ch. 19 - What is the difference between micro- and...Ch. 19 - Population genetics is the study of: how selective...Ch. 19 - Which of the following populations is not in...Ch. 19 - One of the original Amish colonies rose from a...Ch. 19 - When male lions reach sexual maturity, they leave...Ch. 19 - Which of the following evolutionary forces can...Ch. 19 - What is assortative mating? when individuals mate...
Ch. 19 - When closely related individuals mate with each...Ch. 19 - What is a cline? the slope of a mountain where a...Ch. 19 - Which type of selection results in greater genetic...Ch. 19 - When males and females of a population look or act...Ch. 19 - The good genes hypothesis is a theory that...Ch. 19 - Solve for the genetic structure of a population...Ch. 19 - Explain the Hardy-Weinberg principle of...Ch. 19 - Imagine you are trying to test whether a...Ch. 19 - Describe a situation in which a population would...Ch. 19 - Describe natural selection and give an example of...Ch. 19 - Explain what a cline is and provide examples.Ch. 19 - Give an example of a trait that may have evolved...Ch. 19 - List the ways in which evolution can affect...
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