Hemophilia is an X-linked recessive trait in humans. If phenotypically normal parents have children without hemophilia, what information could be determined by a pedigree analysis?
A) Neither parent carries the hemophiliac allele.
B) None of their children is a carrier of the hemophilia allele.
C) None of their children could have hemophiliac children.
D) The exact genotypes of the parents or children

Question

Quizplus · Accepted Answer

Pedigree analysis can help determine the possible genotypes of the parents and children, but not the exact genotypes, especially if the trait is recessive and not expressed in the phenotype.

Hemophilia Is an X-Linked Recessive Trait in Humans