Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

تمرين 1

The following pedigree ( Fig. ) represents the inheritance of an X-Linked recessive trait.
a. Complete the genotype for each of the family members.
b. Why is there never any male-to-male transmission?
c. If a mother has the trait, what is the likelihood that her sons will have the trait? Why is this?
Figure Pedigree of an X-linked recessive inheritance.