Question

multiple choice question
in genetics, what is the relationship between d
a.a dominant allele masks the effect of a recessive allele
when both are present.
b.a dominant allele is inherently better or more
advantageous than a recessive allele.
c.a dominant allele is always more common in a
population than a recessive allele.
d.a dominant allele and a recessive allele blend together
create an intermediate trait.

Explanation:

In genetics, a dominant allele masks the effect of a recessive allele when both are present. Dominance is about phenotypic expression, not about being "better" (B is wrong as it's a value - judgment not based on genetic definition), not about allele frequency (C is wrong as recessive alleles can be common, e.g., blue - eye allele), and blending (D) is more related to incomplete dominance, not the general relationship between dominant and recessive alleles.

Answer:

A. A dominant allele masks the effect of a recessive allele when both are present.