If you have the frequency of the recessive allele for a gene, how do you get the frequency of the dominant allele?

Question

Vincent Simon

Biology

31 January, 10:09

If you have the frequency of the recessive allele for a gene, how do you get the frequency of the dominant allele?

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Roberto Garrison · Answer 1

The frequency of the recessive allele. Answer: Since we believe that the homozygous recessive for this gene (q2) represents 4% (i. e. = 0.04), the square root (q) is 0.2 (20%).

The frequency of the dominant allele. Answer: Since q = 0.2, and p + q = 1, then p = 0.8 (80%).

The frequency of heterozygous individuals.