The frequency of a dominant allele in a population is 0.75. If the frequency of a recessive allele in a population is 50%.
Given
Frequency of recessive allele in percent q² = 50%
q = 0.5
From Hardy Weinberg principle
if no unfavorable factors exist, genetic variation in a population will remain stable from one generation to the next.
p + q = 1
p = 1-0.5
p = 0.5
Frequency of dominant allele
p² + 2pq =
(0.5)2 +2 x 0.5 x 0.5 = 0.75
Hence, frequency of dominant allele is 0.75.
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