Heterozygous individuals who carry a recessive allele without expressing it are usually described as what?
ACarriers
BMutants
CHybrids
DVariants
Answer & Solution
Correct answer: A. Carriers
1. In the presence of a dominant allele, a recessive allele is hidden and makes no contribution to the phenotype.
2. Recessive alleles can therefore be carried without being expressed.
3. Heterozygous individuals in that position are referred to as carriers.
4. Variant is the term for a phenotype that deviates from the wild type, which is a different idea.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 12 "Mendel's Experiments and Heredity", section 12.2 Characteristics and Traits_
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