What is a dominant allele?
A)An allele that is very prevalent in a population
B)An allele that will only have an affect on phenotype in a haploid organism;otherwise its presence will be masked
C)An allele that has no noticeable affect on an organism's phenotype
D)In a heterozygous individual,the allele that determine's the phenotype
E)An allele whose effect is masked unless in the homozygous condition

Question

Quizplus · Accepted Answer

A dominant allele is defined as the allele that determines the phenotype in a heterozygous individual. It masks the effect of the recessive allele and is expressed even when present in only one copy.

What Is a Dominant Allele