An Allele That Masks the Effect of Another Is

Question

An allele that masks the effect of another is
A)homozygous.
B)heterozygous.
C)recessive.
D)dominant.

Accepted Answer

An allele that masks the effect of another allele is dominant. This means that if present in a heterozygous individual (one with two different alleles of the same gene), the dominant allele will be expressed and the recessive allele will be masked. Only when an individual is homozygous recessive (having two copies of the recessive allele) will the recessive trait be expressed. Therefore, the correct choice is D - dominant.