In the offspring of a cross between type AB and type O individuals, what blood types are possible?

When considering the offspring from a cross between individuals with blood type AB and blood type O, it is crucial to understand how blood types are inherited based on the ABO blood group system. Blood type is determined by specific alleles: A, B, and O. The AB individual has one allele for A and one for B, while the O individual has two alleles for O.

The possible allele combinations in the offspring resulting from this cross would be as follows:

1. From the AB parent, the offspring can inherit either the A allele or the B allele.

2. From the O parent, since the O individual can only donate an O allele, the offspring can only inherit O.

This results in two potential blood type combinations:

• If the offspring inherit the A allele from the AB parent and an O allele from the O parent, the resulting blood type will be A.

• If the offspring inherit the B allele from the AB parent and an O allele from the O parent, the resulting blood type will be B.

Thus, the possible blood types in the offspring from this genetic cross are either type A or type B. This aligns with the correct answer, highlighting the unique inheritance patterns of blood type based on the ABO system.