In the universal ABO blood grouping system, there are four phenotypes-A, B, AB, and O-which are determined by three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____.
A) a polymorphism
B) genetic drift
C) the bottleneck effect
D) a dimorphism
E) the founder effect

Question

Quizplus · Accepted Answer

The presence of three alleles in the ABO blood grouping system is an example of a polymorphism, which refers to the occurrence of two or more distinct forms (in this case, alleles) in the population's genetic makeup.

In the Universal ABO Blood Grouping System, There Are Four