A. It is never expressed in any condition
B. It is expressed only in heterozygous
C. It expresses its effect only in heterozygous state
D. It is expressed both in heterozygous and heterozygous condition
Submitted by: Rashid Mehmood
Correct Answer: It is expressed both in heterozygous and heterozygous condition ✔
Last Updated: July 05, 2021