What pattern of inheritance includes the AB blood type, in which both A and B alleles are expressed?
A) incomplete dominance
B) codominance
C) independent assortment
D) sex linkage

Question

Quizplus · Accepted Answer

Codominance is the pattern of inheritance where both alleles are equally expressed in the phenotype. In the case of blood types, the AB blood type is an example of codominance because both A and B alleles are expressed equally on the surface of the red blood cells. This is in contrast to incomplete dominance, where the heterozygous phenotype is a blend of the two alleles, and independent assortment and sex linkage, which refer to patterns of inheritance based on the location of genes on chromosomes.

What Pattern of Inheritance Includes the AB Blood Type, in Which