Question

ABO blood group system is due to ______.

Options

• multifactor inheritance

• incomplete dominance

• multiple allelism

• epistasis

Answer 1

ABO blood group system is due to multiple allelism.

Explanation:

Many allelism is the mode of inheritance when there are multiple alleles. The inheritance of ABO blood types in humans is a well-known and simple example of multiple allelism. There are three distinct alleles for this feature in the human population: IA, IB, and IO. Blood type can be identified if a person has only two of these three alleles.