Predict the possible blood types,or phenotypes,of offspring in which the father has blood type O and the mother has blood type AB.
A)The possible blood types of the offspring are phenotypes A,B,AB,or O.
B)The possible blood types of the offspring are phenotypes A or O only.
C)The possible blood types of the offspring are phenotypes A or B only.
D)The possible blood types of the offspring are phenotypes AB or O only.

Question

Quizplus · Accepted Answer

A person with blood type O has two O alleles (OO) and can only pass on an O allele to their offspring. A person with blood type AB has one A allele and one B allele and can pass on either allele to their offspring. Therefore, the possible blood types of the offspring are either A (from receiving an A allele from the AB parent and an O allele from the O parent, resulting in AO genotype) or B (from receiving a B allele from the AB parent and an O allele from the O parent, resulting in BO genotype). Blood types AB and O are not possible in this scenario because AB would require an A and a B allele (the O parent cannot provide these), and O would require two O alleles (the AB parent cannot provide an O allele).

Predict the Possible Blood Types,or Phenotypes,of Offspring in Which the Father