Question

In a random mating population frequency of dominant allele is 0.7. What will be the frequency of recessive phenotype?

• A. 0.49
• B. 0.09
• C. 0.3
• D. 0.21

Answer 1

The correct option is B 0.09

• According to the question, the genotype frequency of dominant allele is (p = 0.7). Since p+q = 1; thus the frequency of recessive allele = q = 1-0.7 = 0.3. The frequency of recessive phenotype = q${}^2$ = 0.09. The correct option is B.