Current evidence BEST supports which statement about the relative number of genes and their effects in most complex traits?
A)Few genes affecting a complex trait have a small effect, more have a middling effect, and most have a large effect.
B)Few genes affecting a complex trait have a small effect, most have a middling effect, and some have a large effect.
C)Some genes affecting a complex trait have a small effect, few have a middling effect, and most have a large effect.
D)Some genes affecting a complex trait have a small effect, most have a middling effect, and few have a large effect.
E)Most genes affecting a complex trait have a small effect, some have a middling effect, and few have a large effect.

Question

Quizplus · Accepted Answer

Most genes influencing complex traits each contribute a small effect, with fewer genes having moderate or large effects. This pattern aligns with the polygenic nature of complex traits, where many genes each contribute slightly to the overall phenotype.

Current Evidence BEST Supports Which Statement About the Relative Number