In the Bombay phenotype,a gene in the recessive condition blocks the expression of A and B red blood cell antigens.Thus,all A,B,and AB genotypes are expressed as the O phenotype.This is an example of ____.
A)complete dominance
B)epistasis
C)incomplete dominance
D)co-dominance
E)pleiotropy

Question

Quizplus · Accepted Answer

In epistasis, one gene's expression is affected by the expression of another gene. In this case, the gene in the recessive condition is affecting the expression of the A and B antigens, resulting in the O phenotype. This is not complete dominance, incomplete dominance, co-dominance, or pleiotropy, as those refer to different patterns of gene expression.

In the Bombay Phenotype,a Gene in the Recessive Condition Blocks