A woman is deaf because of being homozygous recessive at an autosomal locus.She marries a deaf man who is also homozygous recessive at an autosomal locus.They have two children who have normal hearing.Assuming that this couple is the biological parents of these children, how is this situation MOST reasonably explained?

Question

Quizplus · Accepted Answer

Complementation occurs when two parents, each homozygous recessive for mutations in different genes (loci) that contribute to a single phenotype (in this case, deafness), have offspring who receive one functional allele for each gene from their parents, thus restoring normal function (normal hearing in this case).

A Woman Is Deaf Because of Being Homozygous Recessive at an Autosomal