Question

Multiple allelism controls inheritance of

• A. blood groups
• B. PKU
• C. sickle cell anemia
• D. colour blindness

Answer 1

The correct option is A blood groups

The term "multiple alleles" is used to describe when a trait is controlled by more than two alleles.
Blood type is the most common example of this as it does have three alleles, specifically "A", "B", and "o" blood types. Each of these controls the production of different antigenic substances on the surface of red blood cells