iGenetics 3rd Edition by Peter Russell

Exercise 3

In humans, the three alleles I A , I B , and i constitute a multiple allelic series that determines the ABO blood group system, as described in this chapter. In each of the following instances, state whether a child of the given blood type could be produced by the parents described, and explain your answer.
a. An O child from two A parents
b. An O child from an A parent and a B parent
c. An AB child from an A parent and an O parent
d. An O child from an AB parent and an A parent
e. An A child from an AB parent and a B parent