Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 20.3, Problem 2R
Summary Introduction
To analyze:
The genotypic frequency of the allele ‘Aa’ within the population of toads.
Introduction:
The Hardy–Weinberg equation can be used to calculate genotypic and allele frequency in a population. These equations are based on the Hardy–Weinberg equilibrium. The equation can be mathematically represented as follows:
Where, p denotes the dominant allele frequency, q is the recessive allele frequency, p2 denotes the homozygous dominant individual’s frequency, q2 denotes the homozygous recessive individual’s frequency, and 2pq denotes the frequency of the heterozygous individuals.
Given:
Allele frequency for allele A (p) = 0.2
Allele frequency for allele a (q) = 0.8
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M
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MN
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N
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Life: The Science of Biology
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