In a hypothetical population of 1000 frogs there exists a gene with two alleles. 280 of the frogs are homozygous dominant (DD), and 220 are homozygous recessive (dd). What is the frequency of the D allele in the population?
A)0)47
B)0)50
C)0)53
D)The answer cannot be determined from the data provided.

Question

Quizplus · Accepted Answer

The total number of alleles in the population is 2 x 1000 = 2000.
The frequency of the dominant allele (D) can be calculated as follows:
Frequency of D = (Number of DD individuals x 2 + Number of Dd individuals) / (Total number of alleles)
= (280 x 2 + (1000 - 280 - 220)) / 2000
= 560/2000
= 0.28
Therefore, the frequency of the D allele in the population is 0.28 or 28%. To convert to a percentage, multiply by 100. Thus, the answer is C) 0.53.

In a Hypothetical Population of 1000 Frogs There Exists a Gene