Question

which of the following represents a homozygous dominant genotype? options: dd, kk, ee, rr

Explanation:

A homozygous dominant genotype has two identical dominant alleles. In genetics, uppercase letters represent dominant alleles. Among the options, "RR" has two identical dominant alleles (R is assumed to be the dominant allele here as per the naming convention in such problems). "Dd" and "Kk" are heterozygous (one dominant and one recessive allele if we follow standard allele - lettering where uppercase is dominant and lowercase is recessive). "ee" is homozygous recessive (two recessive alleles).

Answer:

RR