An allele that exerts its effects whenever it is present is:

Question

Quizplus · Accepted Answer

A dominant allele is expressed whenever it is present, meaning that it will mask the effect of the recessive allele in a heterozygous individual. In contrast, a recessive allele is only expressed when two copies are present, meaning that it is masked by the dominant allele in a heterozygous individual. Homologous refers to two copies of a chromosome, while homozygous refers to having two identical alleles for a particular gene. Therefore, the best choice for this question is B, dominant.

An Allele That Exerts Its Effects Whenever It Is Present