Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 23, Problem 8TYK
In a population with two alleles, B and b, the allele frequency of b is 0.4. What would be the frequency of hétérozygotes if the population is Hardy-Weinberg equilibrium?
- a. 0.16
- b. 0.24
- c. 0.48
- d. You cannot tell from this information.
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1) 10,000 individuals are sampled from a population and are found to display one of three blood types: AA with 6800 individuals, AB with 2800 individuals and type BB with 400 individuals.
a) What is the frequency of each genotype in the population?
b) What is the frequency of the A allele?
c) What is the frequency of the B allele?
d) If the next generation contains 25,000 individuals, how many would have blood type BB, assuming the population is in Hardy-Weinberg Equilibrium?
In horses, tobiano is a white spotting pattern. The tobiano allele (T) is dominant over the non-tobiano (t) allele. In an ideal horse population exhibiting Hardy–Weinberg equilibrium, 325 horses out of 500 are non-tobiano.
a. Calculate the number of homozygous dominant tobiano horses. Answer
b. Calculate the number of heterozygous horses. Answer
c. Calculate the number of tobiano horses in the population. Answer
Express your answer rounded to the nearest whole number.
Below are individuals in a population broken down by genotype.
(A) Complete the table
AA
Aa
aa
Total
# individuals
305
650
55
# A alleles
# a alleles
(B) Determine the frequency of alleles A and a. Show your work.
(C) Assuming the population is in Hardy-Weinberg equilibrium, determine the number of heterozygous individuals in the next generation with a population of 1200.
Chapter 23 Solutions
Study Guide for Campbell Biology
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Ch. 23 - Prob. 3TYKCh. 23 - Prob. 4TYKCh. 23 - Mice have an estimated 1,000 olfactory receptor...Ch. 23 - Prob. 6TYKCh. 23 - If a population has the following genotype...Ch. 23 - In a population with two alleles, B and b, the...Ch. 23 - Prob. 9TYKCh. 23 - Prob. 10TYKCh. 23 - In a random sample of a population of shorthorn...Ch. 23 - Genetic drift is likely to be seen in a population...Ch. 23 - Porphyria variegata is a genetic disease...Ch. 23 - Cystic fibrosis is a very serious genetic disorder...Ch. 23 - Prob. 15TYKCh. 23 - Prob. 16TYKCh. 23 - Prob. 17TYKCh. 23 - Prob. 18TYKCh. 23 - Prob. 19TYKCh. 23 - Prob. 20TYKCh. 23 - Prob. 21TYK
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