Question

How is a recessive allele different from a dominant allele apex?

Answer 1

Recessive and dominant alleles. You will recall that genes have different forms called alleles. An allele can be recessive or dominant. A recessive allele only shows if the individual has two copies of the recessive allele.

Answer 2

Answer: The correct answer is -

Recessive and dominant alleles are the two different forms of a gene that are also known as gene variants.

A dominant allele (represented by capital letter allele such as T for tall pea plant) is the one that masks the expression of a recessive allele.

It shows its phenotype even when a single copy of it is present in the genotype (such as in case of Tt, which represents Tall plant).

On the contrary, a recessive allele (represented by small letter allele such as 't' for dwarf) is the one that only shows its phenotype when present in a homozygous recessive form (like tt for dwarf). This is because it is masked when present with a dominant allele.