What Type of Allele Produces Its Effects in Only Homozygous

Question

What type of allele produces its effects in only homozygous individuals?
A) Diploid
B) Haploid
C) Recessive
D) Dominant

Accepted Answer

A recessive allele produces its effects only when an individual has two copies of that allele, meaning the individual is homozygous for the recessive allele.