CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Chapter 21, Problem 5TYU
A fruit fly population has a gene with two alleles, A1 and A2. Tests show that 70% of the gametes produced in the population contain the A1 allele. If the population is in Hardy- Weinberg equilibrium, what proportion of the flies carry both A1 and A2?
- A. 0.7
- B. 0.49
- C. 0.42
- D. 0.21
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Students have asked these similar questions
In a hypothetical species of mice, the shaggy gene determines hair length. S is the dominant allele and confers the short hair phenotype. Homozygous ss individuals have long hair. There are 422 long-haired mice and 278 short-haired mice in the population.
What is the frequency of the SS genotype?
a. 0.60
b. 0.05
c. 0.40
d. 0.22
The mean number of offspring produced by each of three genotypes is shown below.
10 MM
30 MN
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What is the selection coefficient for the genotype NN?
a.
0.2
b.
0
c.
1
d.
0.5
What is the average survival rate for the Minotaur when the breeding season starts?
A.
0.42
B.
0.54
C.
0.66
D.
0.76
E.
0.83
Following up on Question 6, assuming random mating, what would be the percentage of long-horned baby Minotaur who are heterozygous at the H locus?
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23.5%
B.
25.0%
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68.0%
Chapter 21 Solutions
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
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 - Consider a population in which heterozygotes at a...Ch. 21 - Natural selection changes allele frequencies...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. 8TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
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