A and a are dominant and recessive alleles,respectively,of the same gene.Which genotype(s)would result in an individual with the recessive phenotype?

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In this scenario, the a allele is recessive, which means that an individual must have two copies of this allele (aa) in order to exhibit the recessive phenotype. Therefore, the only genotype that would result in an individual with the recessive phenotype is aa. Choice A (Aa and aa) could result in an individual with either the dominant or recessive phenotype, depending on whether the dominant allele is expressed or not. Choice B (AA and aa) would result in individuals with the dominant phenotype. Choice C (Aa only) would result in individuals with either the dominant or recessive phenotype, depending on whether the dominant allele is expressed or not. Choice D (AA only) would result in individuals with the dominant phenotype.

A and a Are Dominant and Recessive Alleles,respectively,of the Same