If, in a heterozygous individual, only one allele is expressed in the phenotype, that allele is
A) potent.
B) dominant.
C) haploid.
D) recessive.
E) normal.

Question

Quizplus · Accepted Answer

In genetics, when in a heterozygous individual (an individual having two different alleles for a specific trait) only one allele is expressed in the phenotype, that allele is referred to as dominant. The other allele, which is not expressed, is known as recessive.

If, in a Heterozygous Individual, Only One Allele Is Expressed