Use the following information to answer the questions below.
In a hypothetical population of 1,000 people, tests of blood-type genes show that 160 have the genotype AA, 480 have the genotype AB, and 360 have the genotype BB.
-What is the frequency of the B allele?

Question

Quizplus · Accepted Answer

The frequency of the B allele is the number of B alleles in the population divided by the total number of alleles in the population. In this case, there are 480 AB genotypes and 360 BB genotypes, so there are a total of 480 + 360 = 840 B alleles. The total number of alleles in the population is 1,000 x 2 = 2,000, so the frequency of the B allele is 840 / 2,000 = 0.42.

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