EBK CAMPBELL BIOLOGY IN FOCUS
2nd Edition
ISBN: 8220101459299
Author: Reece
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 6TYU
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
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
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
50 NN
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?
A.
23.5%
B.
25.0%
C.
50.0%
D.
51.5%
E.
68.0%
Chapter 21 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
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 - Prob. 3CCCh. 21 - Natural selection changes allele frequencies...Ch. 21 - No two people are genetically identical, except...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. 9TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
Additional Science Textbook Solutions
Find more solutions based on key concepts
What is the difference between histology and radiography?
Human Anatomy (8th Edition)
Figure 1.18 In the example below, the scientific method is used to solve an everyday problem. Which part in the...
Concepts of Biology
Describe Mendels conclusions about how traits are passed from generation to generation.
Concepts of Genetics (12th Edition)
Define histology.
Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
a. What three lineages of lobe-fins survive today? b. Go back to the phylogenetic tree in Interactive Question ...
Study Guide for Campbell Biology
Sea turtles have disappeared from many regions, and one way of trying to save them is to reintroduce them to ar...
Marine Biology (Botany, Zoology, Ecology and Evolution)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The allele frequency of C is 0.4 and c is 0.6. If the population is in Hardy-Weinberg equilibrium, what is the frequency of heterozygotes? a. 0.16 c. 0.26 b. 0.24 d. 0.48arrow_forwardSuppose that in a population the frequency of a particular recessive condition is 1/400. Assume this is locus with two alleles (A and a) in the population and that the population is at Hardy–Weinberg equilibrium. What is the frequency of the carriers of this condition in the population? A. 0.9025 B. 0.0025 C. 0.05 D. 0.095 E. 0.0475arrow_forwardIn a population 25 individuals that recently emigrated from a mainland population to form a new population on an unpopulated island the frequency of the dominant allele is 0.64. What is the probability of fixation in the next generation? a. 100% b. 36% c. 64% d. 75%arrow_forward
- In the gene pool of a population with 132 individuals, a fixed allele for a particular genetic locus has a frequency of a. 0.75 b. 0.5 c. 0 d. 1arrow_forwardA gene exists in two alleles designated D and d. If 48 copies of this gene are the D allele and 152 are the d allele, what is the allele frequency of D? a. 0.24 c. 0.38 b. 0.32 d. 0.76arrow_forwardThe mean number of offspring produced by each of three genotypes is shown below. What is the fitness (W) for the genotype MM? 10 MM 30 MN 50 NN a. 0.20 b. 1 c. 0.80 d. 0arrow_forward
- If the frequency of allele 1 is 0.8 and the frequency of allele 2 is 0.2 what is the expected frequency of heterozygotes under Hardy Weinberg? Group of answer choices A. 0.32 B. 0.8 C. 0.2 D. 0.16arrow_forwardIn a population that is in Hardy-Weinberg equilibrium, there are two possible alleles for a certain gene, A and a. If the frequency of allele A is 0.4, what fraction of the population is heterozygous? O A. 0.40 B. 0.60 C. 0.16 D. 0.48arrow_forwardIn a group of patients, it is reported that drug p is effective only in individuals of the recessive phenotype. if q = .6 and p to .4 what fraction of patients would benefit from the treatment. Assume that the population is in HW equilibrium? a. .25 b. .36 c. .4 d. .6arrow_forward
- In a population of frogs, allele frequencies for gene B are: p = f(B) = 0.3 q = f(b) = 0.7 If the population has 500 frogs and is under Hardy-Weinberg equilibrium, what is the genotypic frequency of the bb genotype? A. 350 B. 280 C. 55 D. 245arrow_forwardIn a population of red (dominant allele) or white flowers in Hardy–Weinberg equilibrium, the frequency of red flowers is 91%. What is the frequency of the red allele? a. 9% b. 30% c. 91% d. 70%arrow_forwardAssume you are studying a population of hummingbirds. The population has an average beak length of 20 millimeters, but a drought removes one type of flower that only long-beaked hummingbirds survive. The surviving population has an average beak length of 28 millimeters. You know that the heritability is 0.25. What is the predicted response to selection? a. 8 millimeters b. 0 millimeters c. 2 millimeters d. 4 millimetersarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License