The probability of parents with the genotypes (Mm) * (Mm) having an offspring with the genotype (mm) is

Question

Quizplus · Accepted Answer

The parents both have the genotype Mm, meaning each can contribute either an M or an m allele to their offspring. For an offspring to have the genotype mm, both parents must contribute the m allele. The probability of one parent contributing an m allele is 1/2, and the same for the other parent. Therefore, the probability of both contributing an m allele is 1/2 * 1/2 = 1/4.

The Probability of Parents with the Genotypes (Mm) * (Mm)