A ________ Allele is Expressed Only When Homozygous

Question

A ________ allele is expressed only when homozygous.
A) homologous
B) homocentric
C) recessive
D) maternal
E) dominant

Accepted Answer

A recessive allele is only expressed when an individual is homozygous for that allele, meaning they have two copies of the recessive allele. If an individual has one dominant allele and one recessive allele, the dominant allele will be expressed, masking the recessive allele.