Question

abo blood group determination is an example of
multiple choice
multiple alleles.
epistasis.
incomplete dominance.
pleiotropy.
polygenic inheritance.

Explanation:

ABO blood groups are determined by three alleles (IA, IB, i) for a single gene locus, which is the definition of multiple alleles. Epistasis involves gene interaction, incomplete dominance shows blended traits, pleiotropy is one gene affecting multiple traits, and polygenic inheritance involves multiple genes for one trait—none match ABO blood group inheritance as directly as multiple alleles.

Answer:

multiple alleles.