Question

figure 18 - 1 alleles in a population. when scientists try to determine whether a population is evolving, they study its allele frequencies. this diagram shows allele frequencies for fur color in a mouse population. calculate: here, in a total of 50 alleles, 20 alleles are b (black) and 30 are b (brown). how many of each allele would be present in a total of 100 alleles?

Explanation:

Step1: Find proportion of B allele

In a total of 50 alleles, 20 are B. Proportion in first - case is $\frac{20}{50}=0.4$.

Step2: Calculate number of B alleles in 100 alleles

Multiply the proportion by 100. So, $0.4\times100 = 40$.

Answer:

40