If the frequency of the recessive allele is 30 percent, the frequency of the heterozygous carrier is what percent?
A)42
B)9
C)27
D)60
E)80

Question

Quizplus · Accepted Answer

The frequency of the heterozygous carrier is 2 * frequency of the recessive allele * frequency of the dominant allele. In this case, the frequency of the recessive allele is 30%, so the frequency of the dominant allele is 100% - 30% = 70%. Therefore, the frequency of the heterozygous carrier is 2 * 0.3 * 0.7 = 0.42, or 42%.

If the Frequency of the Recessive Allele Is 30 Percent