Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 8TYK
If the genotype frequencies in a population are 0.60 AA, 0.20 Aa, and 0.20 aa, and if the requirements of the Hardy–Weinberg principle apply, the genotype frequencies in the offspring generation will be:
a. 0.60 AA, 0.20 Aa, 0.20 aa.
b. 0.36 AA, 0.60 Aa, 0.04 aa.
c. 0.49 AA, 0.42 Aa, 0.09 aa.
d. 0.70 AA, 0.00 Aa, 0.30 aa.
e. 0.64 AA, 0.32 Aa, 0.04 aa.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
What variable in the Hardy-Weinberg equation expresses the heterozygous genotype?
A.
p^2 + q^2
B.
q^2
C.
p^2
D.
2pq
Consider a sample of 100 individuals sampled from a population in Hardy-Weinberg
equilibrium that are genotyped at a single locus.
Of these 100 individuals, 25 individuals are A¡A1, 45 are A1A2, and 30 are A2A2.
What is the actual (observed) allele frequency of the A1 allele in this sample?
(you may use a calculator if needed)
O A. 0.325
O B. 0.275
O C. 0.475
O D. 0.525
You are surveying population genetics of snails while studying abroad in New Zealand. At your locus of interest, you have AA: 32 Aa:46 aa: 22. Identify the statement that accurately describes this population.
a.
The genotype frequency of AA is 0.77.
b.
The frequency of the A allele is 0.45.
c.
The genotype frequency of the heterozygotes is 0.45.
d.
The frequency of the a allele is 0.23.
Chapter 21 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 21.1 - If a population of skunks includes some...Ch. 21.1 - Prob. 2SBCh. 21.1 - What factors contribute to phenotypic variation in...Ch. 21.2 - Prob. 1SBCh. 21.2 - Why is the Hardy-Weinberg principle considered a...Ch. 21.2 - Prob. 3SBCh. 21.3 - Which agents of microevolution tend to increase...Ch. 21.3 - Which mode of natural selection increases the...Ch. 21.3 - In what way is sexual selection like directional...Ch. 21.4 - How does the diploid condition protect harmful...
Ch. 21.4 - Prob. 2SBCh. 21.4 - Prob. 3SBCh. 21.5 - How can a biologist test whether a trait is...Ch. 21.5 - Why are most organisms adapted to the environments...Ch. 21 - The reason spontaneous mutations do not have an...Ch. 21 - The phenomenon in which chance events cause...Ch. 21 - Prob. 3TYKCh. 21 - Prob. 4TYKCh. 21 - Prob. 5TYKCh. 21 - Which of the following represents an example of...Ch. 21 - A population of mice is at HardyWeinberg...Ch. 21 - If the genotype frequencies in a population are...Ch. 21 - An Eastern European immigrant carrying the allele...Ch. 21 - If a storm kills many small sparrows in a...Ch. 21 - Prob. 11TYKCh. 21 - Discuss Concepts Many human diseases are caused by...Ch. 21 - Prob. 13TYKCh. 21 - Apply Evolutionary Thinking Captive breeding...Ch. 21 - Prob. 15TYKCh. 21 - Design an experiment to test the hypothesis that...Ch. 21 - Peter and Rosemary Grant of Princeton University...
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
- A population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1A2 genotype, and 123 have the A2A2 genotype. What is the allele frequency of A1? Answer to 2 decimal places.arrow_forwardIn a population, 12% of the babies are born with sickle-cell anaemia. What is the frequency of the carrier genotype in the population? Calculate up to 3 decimal places. * O 0.346 O 0.427 O 0.452 O 0.654arrow_forwardThis Punnett square shows allele combinations for all possible genetic crosses in the wildflower population described in Part A. CR E p= 0.7 CW q= 0.3 p= 0.7 ? CW CR CR CR CW q= 0.3 ? ? CR CW CW CW ? What are the expected genotype frequencies in the offspring generation? O 0.49 CRCR (red flowers), 0.42 CRCW (pink flowers), 0.09 CWCW (white flowers) 0.49 CRCR (red flowers), 0.21 CRCW (pink flowers), 0.30 CWCW (white flowers) O 0.09 CRCR (red flowers), 0.21 CRCW (pink flowers), 0.42 CWCW (white flowers) 0.09 CRCR (red flowers), 0.42 CRCW (pink flowers), 0.09 CWCW (white flowers)arrow_forward
- Albinism is due to a recessive allele of an autosomal gene. Let a represent the albino allele and A represent the normal non-albino allele. If one out of every 10,000 people were albino and assuming that the population is in Hardy-Weinberg equilibrium, A. what would be the phenotype frequencies of albino and non-albino ? B. what would be the allele frequencies of a and of A? C. what fraction of people can be expected to be of the genotype Aa? D. what fraction of people can be expected to be of the genotype AA?arrow_forwardIn 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, 350 horses out of 465 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.arrow_forward9)arrow_forward
- Answer the question, using the graphs attached.arrow_forwardThe Rh factor is an antigen expressed on red blood cells and is controlled by a single gene. The dominant allele RH causes a person to be Rh, positive, and the recessive allele is represented as rh. Assume that a population is in Hardy-Weinberg equilibrium and 16 individuals out of 100 are Rh negative. What are the allele frequencies of RH and rh in this population? A. The allele frequency of RH is 0.80 and the allele frequency of rh is 0.20 B. The allele frequency of RH is 0.84 and the allele frequency of rh is 0.16 C. The allele frequency of RH is 0.50 and the allele frequency of rh is 0.50 D. The allele frequency of RH is 0.60 and the allele frequency of rh is 0.40arrow_forwardAssume a biallelic locus in a diploid population. Out of 100 individuals, the following genotypes were observed: 59 A1A1 individuals; 16 A1A2 individuals; and 25 A2A2 individuals. What is the observed (actual; not predicted) allele frequency of the A1 allele? (you may use a calculator here) O A. 0.33 O B. 0.67 O C. 0.16 O D.0.59 O E. 0.25arrow_forward
- Consider a gene with two alleles, L and M, that exhibit complete dominance. The table below provides the relative fitnesses of the three genotypes in two populations. LL LM MM Population 1 0.8 0.3 0.3 Population 2 0.9 1.0 1.0 a. Which allele is dominant, and how do you know? b. Which allele will increase (in each population), and how do you know? c. In which population will the change in allele frequencies occur more quickly, and how do you know?arrow_forwardIn fruit flies, long wings (L) are dominant over short wings (l). In a population of 45 fruit flies, 27 have LL genotypes, 13 have Ll genotypes, and 5 have ll genotypes. Find the frequency of the following. Show all work and record your answer as a value between 0 and 1 rounded to two decimal places.a. long-winged fruit flies: b. short-winged fruit flies:arrow_forwardIn a population of mice, there are two alleles of the Alocus (A1 and A2). Tests showed that, in this population,there are 384 mice of genotype A1/A1, 210 of A1/A2 , and260 of A2/A2. What are the frequencies of the two allelesin the population?arrow_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
What is Evolution?; Author: Stated Clearly;https://www.youtube.com/watch?v=GhHOjC4oxh8;License: Standard Youtube License