The AB blood type, in which both A and B alleles are expressed, is an example of
A) incomplete dominance.
B) codominance.
C) independent assortment.
D) sex linkage.

Question

Quizplus · Accepted Answer

In codominance, both alleles are expressed and can be seen in the phenotype, which is the case for the AB blood type where both the A and B alleles are expressed equally. In incomplete dominance, the phenotype is a blend of the two alleles, which is not the case here. Independent assortment refers to how different genes segregate independently during meiosis and does not apply to the expression of a single gene. Sex linkage refers to genes located on the sex chromosomes and does not apply to blood type inheritance.

The AB Blood Type, in Which Both a and B