Biology (MindTap Course List)
11th Edition
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Chapter19: Evolutionary Change In Populations
Section: Chapter Questions
Problem 11TYU: If all copies of a given locus have the same allele throughout the population, the allele frequency...
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Question
You have a population with 3 BB, 8 Bb, and 2 bb genotypes.
What is the frequency of the B allele?
Expert Solution
Step 1
Introduction :
According to the Hardy-Weinberg principle, allele frequencies in a population are stable and remain constant throughout generations in the absence of additional evolutionary influences such as gene flow, genetic drift, mutation, genetic recombination, and natural selection. Mathematically it can be written as ;
p²+2pq+q² = 1 and p + q = 1 ; where
p² = frequency of homozygous dominant genotype
2pq = frequency of heterozygous genotype
q² = frequency of homozygous recessive genotype
p = frequency of dominant allele
q = frequency of recessive allele
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