EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
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Chapter 22, Problem 7TY
Summary Introduction
Introduction:
Gene pool refers to all of the genetic information of a particular species in a population. It is an indicator of the variation or diversity among a population. Great genetic diversity is exhibited by a larger gene pool whereas, a small gene pool means lesser variation.
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Sickle cell anemia is maintained in human populations because individuals with a single copy of the sickle cell allele have resistance to malaria but lack the health problems of individuals with two copies of the allele. Variation at the sickle cell locus is maintained by which of the following?
Group of answer choices
A. heterozygote advantage
B. random change in allele frequency
C. mutation selection balance
D. frequency dependent selection
Which of the following most accurately describes mutations?
a.
They typically have immediate and impactful evolutionary effects on populations.
b.
They are required for all populations to evolve.
c.
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d.
They occur so infrequently that most populations to harbor very little variation.
Which of the following is the mutation rate?
a. the likelihood that a new mutation will occur in a given gene.
b. too low to substantially change allele frequencies in a population.
c. lower for mutations that create beneficial alleles.
d. All of the above are true of the mutation rate.
Chapter 22 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 22 - Do you think the skeletons of Liang Bua Cave...Ch. 22 - Is it important that we try to discover the...Ch. 22 - Describe the three key elements of evolution.Ch. 22 - Explain how a fossil is created.Ch. 22 - List some of the main sources of evidence for...Ch. 22 - Prob. 4CRCh. 22 - Prob. 5CRCh. 22 - Prob. 6CRCh. 22 - Explain how rising atmospheric concentrations of...Ch. 22 - List the features that make Hominidae different...
Ch. 22 -
9. Describe the origins of Homo sapiens.
Ch. 22 - Explain why racial differences may disappear...Ch. 22 - Prob. 1TYCh. 22 - Prob. 2TYCh. 22 - Prob. 3TYCh. 22 - Vestigial structures, homologous structures, and...Ch. 22 -
5. Which of the following statements about...Ch. 22 - Which of the following best describes evolutionary...Ch. 22 - Prob. 7TYCh. 22 - Genetic drift is most likely to affect: a. every...Ch. 22 -
9. Which of the following would be described as...Ch. 22 - Which of the following statements is true? a. Mass...Ch. 22 - In what order did events occur that led to life on...Ch. 22 - Prob. 12TYCh. 22 -
13. Which of the following statements about the...Ch. 22 - Prob. 14TYCh. 22 - Which of the following is not believed to be a...Ch. 22 - Prob. 1AWKCh. 22 - Prob. 2AWKCh. 22 - Critics of evolution often charge, correctly as it...Ch. 22 - Prob. 4AWKCh. 22 - Prob. 5AWKCh. 22 - It is believed that humans evolved in Africa and...Ch. 22 - Prob. 7AWKCh. 22 - Of all the great evolutionary advances of life on...
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