CAMPBELL BIO: CONCEPTS&CONNECTIONS (LL)
20th Edition
ISBN: 9780134610078
Author: Reece
Publisher: PEARSON
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Chapter 13, Problem 6TYK
If an allele is recessive and lethal in homozygotes before they reproduce,
a. the allele will be removed from the population by natural selection in approximately 1,000 years.
b. the allele will likely remain in the population at a low frequency because it cannot be selected against in heterozygotes.
c. the fitness of the homozygous recessive genotype is 0.
d. both b and c are correct.
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Chapter 13 Solutions
CAMPBELL BIO: CONCEPTS&CONNECTIONS (LL)
Ch. 13 - Summarize the key points of Darwins theory of...Ch. 13 - Complete this concept map describing potential...Ch. 13 - Which of the following did not influence Darwin as...Ch. 13 - Natural selection is sometimes described as...Ch. 13 - In an area of erratic rainfall, a biologist found...Ch. 13 - If an allele is recessive and lethal in...Ch. 13 - In a population with two alleles, B and b, the...Ch. 13 - Within a few weeks of treatment with the drug 3TC,...Ch. 13 - In the late 1700s, machines that could blast...Ch. 13 - Write a paragraph briefly describing the kinds of...
Ch. 13 - In the early 1800s, French naturalist Jean...Ch. 13 - Sickle-cell disease is caused by a recessive...Ch. 13 - It seems logical that natural selection would work...Ch. 13 - SCIENTIFIC THINKING Cetaceans are fully aquatic...Ch. 13 - A population of snails is preyed on by birds that...Ch. 13 - Advocates of scientific creationism and...
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