Afather with type b blood and mother with type a blood have a child. their child, while in a biology lab at school, tests her blood and discovers she has type o blood. does she have any concerns about her parentage?
a. yes, because she should have type ab blood if they are her true biological parents.
b. no, because type o blood is possible if her parents both had genotypes ab.
c. no, because both of her parents could be heterozygous.
d. yes, because both of her parents might be heterozygous.
e. no, because blood types a and b are codominant.