why is there no such thing as heterozygous recessive
Biology · High School · Tue Nov 03 2020
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A recessive gene is incapable of showing its effect if present in a heterozygous set, while a dominant gene expresses its phenotype if either in a dominant or heterozygous set. Hence, due to terminology, a heterozygous recessive effect cannot exist, as such a condition would actually refer to a dominant gene. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive.