Crossing true-breeding pea plants with yellow peas with true-breeding plants with green peas yielded an F1 generation with 100% offspring plants with yellow peas. The F1 plants are self-fertilized and produce F2. In a randomly selected set of 100 peas from F2 you notice the following phenotypic numbers: 84 yellow and 16 green. Using the Hardy-Weinberg principle: What is the observed frequency of the recessive allele in this F2 population?

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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Crossing true-breeding pea plants with yellow peas with true-breeding
plants with green peas yielded an F1 generation with 100% offspring
plants with yellow peas. The F1 plants are self-fertilized and produce F2.
In a randomly selected set of 100 peas from F2 you notice the following
phenotypic numbers: 84 yellow and 16 green. Using the Hardy-Weinberg
principle:
What is the observed frequency of the recessive allele in this F2
population?
0.36
0.50
0.40
0.16
0.60
Transcribed Image Text:Crossing true-breeding pea plants with yellow peas with true-breeding plants with green peas yielded an F1 generation with 100% offspring plants with yellow peas. The F1 plants are self-fertilized and produce F2. In a randomly selected set of 100 peas from F2 you notice the following phenotypic numbers: 84 yellow and 16 green. Using the Hardy-Weinberg principle: What is the observed frequency of the recessive allele in this F2 population? 0.36 0.50 0.40 0.16 0.60
Expert Solution
Step 1: Introduction:

The Hardy-Weinberg principle states that genetic variation will remain constant in a large population that randomly mates. In the absence of natural selection or forces like genetic drift, mutation, and migration that drive the natural selection the genotype frequencies will remain constant for the population to be in Hardy-Weinberg equilibrium. This law predicts that rare alleles are mostly seen in heterozygous conditions than in homozygous conditions. 


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