Question

which of the following is not a possible genotype in humans?
heterozygous
homozygous recessive
heterozygous recessive
homozygous dominant

Explanation:

In genetics, a heterozygous genotype has two different alleles (e.g., \(Aa\)). A homozygous recessive genotype has two recessive alleles (e.g., \(aa\)), and a homozygous dominant genotype has two dominant alleles (e.g., \(AA\)). However, the term "heterozygous recessive" is not a valid genotype description. Heterozygous means having two different alleles, and recessive refers to the trait expressed when two recessive alleles are present (homozygous recessive).

Answer:

Heterozygous recessive