Question

practice identifying dominant and recessive
a heterozygous genotype will only show the dominant trait, because a dominant allele always covers or masks a
heterozygous genotype is
(need a refresher? watch this video on heterozygous and homozygous)

Explanation:

A heterozygous genotype consists of one dominant allele and one recessive allele (e.g., $Aa$). By definition, a heterozygous genotype has two different alleles for a gene, with one being dominant and the other recessive. So the correct term to fill in the blank for "A heterozygous genotype is" would be a genotype with one dominant and one recessive allele (or in the context of the options, likely a combination like having one dominant and one recessive allele, but since the blank is to define it, the key is recognizing the heterozygous genotype has one dominant and one recessive allele. If the options were, for example, "a genotype with two different alleles (one dominant, one recessive)", that would be correct. Assuming the dropdown has options like "a genotype with one dominant and one recessive allele" (or similar), that's the answer.

Answer:

A heterozygous genotype is a genotype with one dominant allele and one recessive allele (e.g., if options were labeled, the correct option would be the one describing it as having one dominant and one recessive allele).