GEN COMBO LOOSELEAF MICROBIOLOGY:A SYSTEMS APPROACH; CONNECT ACCESS CARD
5th Edition
ISBN: 9781260149364
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 20, Problem 11TF
Brucellosis can be transmitted to humans by drinking contaminated milk.
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You are studying the effect of directional selection on body height in three
populations (graphs a, b, and c below).
(a) What is the selection differential? Show your calculation. (2 pts)
(b) Which population has the highest narrow sense heritability for height?
Explain your answer. (2 pts)
(c) If you examined the offspring in the next generation in each population,
which population would have the highest mean height? Why? (2 pts)
(a)
Midoffspring height (average height of offspring)
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Short
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(c)
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(b)
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Tall
Short
Tall
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Tall
Midparent height
(average height of
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
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You are studying a population of 100 flowers that has two alleles at a locus for
flower color, blue (B) and green (G). There are 15 individuals with the BB
genotype, 70 individuals with the BG genotype, and 15 individuals with the GG
genotype.
(a) What are the allele frequencies of B and G in the starting population? Show
your calculations. (2 pts)
(b) Is this population in Hardy-Weinberg equilibrium? Show your calculations. (3
pts)
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In a natural population of outbreeding plants, the variance of the total number
of seeds per plant is 16. From the natural population, 20 plants are taken into
the laboratory and developed into separate true-breeding lines by self-
fertilization-with selection for high, low, or medium number of seeds-for 10
generations. The average variance in the tenth generation in each of the 20 sets
is about equal and averages 5.8 across all the sets. Estimate the broad-sense
heritability for seed number in this population. (4 pts)
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Chapter 20 Solutions
GEN COMBO LOOSELEAF MICROBIOLOGY:A SYSTEMS APPROACH; CONNECT ACCESS CARD
Ch. 20.1 - Describe the important anatomical features of the...Ch. 20.1 - List the natural defenses present in the...Ch. 20.2 - Prob. 3AYPCh. 20.3 - Prob. 4AYPCh. 20.3 - Prob. 5AYPCh. 20.3 - Prob. 6AYPCh. 20.3 - Prob. 7AYPCh. 20.3 - Prob. 8AYPCh. 20.3 - Prob. 9AYPCh. 20.3 - Identify the five or six most relevant facts about...
Ch. 20.3 - Prob. 11AYPCh. 20.3 - Prob. 12AYPCh. 20.3 - Prob. 13AYPCh. 20 - Prob. 1MCQCh. 20 - Prob. 2MCQCh. 20 - Prob. 3MCQCh. 20 - Rabbit fever is caused by a. Yersinia pestis. b....Ch. 20 - Prob. 5MCQCh. 20 - Prob. 6MCQCh. 20 - Prob. 7MCQCh. 20 - Prob. 8MCQCh. 20 - Prob. 9MCQCh. 20 - Prob. 10MCQCh. 20 - Brucellosis can be transmitted to humans by...Ch. 20 - Prob. 12TFCh. 20 - Prob. 13TFCh. 20 - Prob. 14TFCh. 20 - Prob. 15TFCh. 20 - Explain why cases of dengue fever have been...Ch. 20 - Prob. 2CTQCh. 20 - Prob. 3CTQCh. 20 - Prob. 4CTQCh. 20 - Prob. 5CTQCh. 20 - Prob. 1VCCh. 20 - Prob. 1CM
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