GENETIC ANALYSIS: AN INTEG. APP. W/MAS
2nd Edition
ISBN: 9781323142790
Author: Sanders
Publisher: Pearson Custom Publishing
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Chapter 22, Problem 5P
Thinking creatively about evolutionary mechanisms, identify at least two schemes that could generate allelic polymorphism in a population. Do not include the processes described in the answer to Problem
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Assume an ideal diploid population of size 2N=32 (Just like the Buri Drosophila drift experiment with 16 individuals, or 32 gene copies, every generation).
a) What is the probability that a neutral allele present in exactly 16 copies will CHANGE BY FEWER than 2 copies in the next generation? Be sure you understand that this includes cases where the number of copies remains unchanged, as well as the cases (plural!) where the magnitude of change between generations is one.
b) What is the ultimate probability of fixation for this allele by drift?
c) In the same population, what is the probability that a neutral allele present in exactly 2 copies will change by fewer than 2 copies (same meaning as above) in the next generation?
d) What is the ultimate probability of fixation for this allele by drift?
What evolutionary factors can cause allele frequencies to change and possibly lead to a genetic polymorphism? Discuss the relative importance of each type of process.
Transmission of genetic information from parent to offspring follows the rule of probability. The possible genotypes of offspring are dependent on the alleles present in parent organism. The lake could of these possibilities can be represented as a fraction(1/4), decimal (0.25), or percentage (25%). Probability ranges between 0% and 100%.
When predicting the likelihood of a combination of possibilities the individual probabilities may be added together and multiplied depending on the type of combination of calculating the probability of possibly A or possibility A and  possibility B The two probabilities are multiplied together. These rules continue to apply for calculating for more than two possibilities. 
A) given the probabilities of the events listed above what is the probability of X and Y and Z?
P(X)= 0.5, P(Y)= 0.25, P(Z)= 0.25.
B) what is the probability of X and Y but not Z? 
Chapter 22 Solutions
GENETIC ANALYSIS: AN INTEG. APP. W/MAS
Ch. 22 - 20.1 Compare and contrast the terms in each of the...Ch. 22 - In a population, what is the consequence of...Ch. 22 - 20.3 Identify and describe the evolutionary forces...Ch. 22 - Describe how natural selection can produce...Ch. 22 - Thinking creatively about evolutionary mechanisms,...Ch. 22 - 20.6 Genetic drift, an evolutionary process...Ch. 22 - Over the course of many generations in a small...Ch. 22 - Catastrophic events such as loss of habitat,...Ch. 22 - 20.9 George Udny Yule was wrong in suggesting that...Ch. 22 - 20.10 The ability to taste the bitter compound...
Ch. 22 - Figure 20.6 illustrates the effect of an ethanol ...Ch. 22 - 20.12 Biologists have proposed that the use of...Ch. 22 - 20.13 Two populations of deer, one of them large...Ch. 22 - 20.14 Directional selection presents an apparent...Ch. 22 - 20.15 What is inbreeding depression? Why is...Ch. 22 - 20.16 Certain animal species, such as the...Ch. 22 - Genetic Analysis 20.1 predicts the number of...Ch. 22 - 20.18 In a population of rabbits, and . The...Ch. 22 - Sickle cell disease (SCD) is found in numerous...Ch. 22 - 20.20 Epidemiologic data on the population in the...Ch. 22 - The frequency of tasters and nontasters of PTC...Ch. 22 - Tay-Sachs disease is an autosomal recessive...Ch. 22 - 20.23 Cystic fibrosis (CF) is the most common...Ch. 22 - 20.24 In the mouse, Mus musculus, survival in...Ch. 22 - 20.25 In a population of flowers growing in a...Ch. 22 - Assume that the flower population described in the...Ch. 22 - 20.27 ABO blood type is examined in a Taiwanese...Ch. 22 - 20.28 A total ofmembers of a Central American...Ch. 22 - 20.29 A sample offield mice contains individuals...Ch. 22 - Prob. 30PCh. 22 - Albinism, an autosomal recessive trait...Ch. 22 - Prob. 32PCh. 22 - 20.33 Evaluate the following pedigree, and answer...Ch. 22 - Evaluate the following pedigree, and answer the...Ch. 22 - The following is a partial pedigree of the British...Ch. 22 - Draw a separate hypothetical pedigree identifying...Ch. 22 - Prob. 37PCh. 22 - 20.38 Achromatopsia is a rare autosomal recessive...Ch. 22 - 20.39 New allopolyploid plant species can arise by...
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