An allele that exerts its phenotypic effect in a heterozygote.Group of answer choicesrecessivedominant
Question
Solution
The correct answer is dominant.
In genetics, an allele that expresses its phenotypic effect even when only one copy is present (as is the case in a heterozygote) is referred to as a dominant allele. This means that if an individual has one dominant allele and one recessive allele for a particular gene, the dominant allele will determine the phenotype of the organism. Conversely, a recessive allele only manifests its effect when an individual has two copies, meaning both alleles are recessive. Hence, the presence of a dominant allele in a heterozygote will overshadow the effect of a recessive allele.
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