The gene for human ABO blood type,for which three or more alleles persist in a population at a relatively high frequency,is an example of _______.
A) multiple allele system
B) polygenic inheritance
C) incomplete dominance
D) epistasis
E) continuous variation

Question

The gene for human ABO blood type,for which three or more alleles persist in a population at a relatively high frequency,is an example of _______.  
A) multiple allele system
B) polygenic inheritance
C) incomplete dominance
D) epistasis
E) continuous variation

Quizplus · Accepted Answer

The presence of three or more alleles at a high frequency in a population is characteristic of a multiple allele system. The ABO blood type gene is an example of such a system, with the alleles A, B, and O.

The Gene for Human ABO Blood Type,for Which Three or More