Examine the Graph Below, Which Shows the Distribution of the Magnitude

Multiple Choice

Examine the graph below, which shows the distribution of the magnitude of gene effects for the different genes contributing to a complex trait. Which of the following statements accurately describes what the graph shows?

A) Most often, a single gene with a small effect has a large effect on a complex trait.
B) Most genes that affect a complex trait have relatively large effects.
C) Most often, multiple genes with large effects are the sole contributors to complex traits.
D) It is easier to identify genes for a complex trait if you examine many genes with a lower magnitude of effect.
E) Most genes that affect a complex trait have relatively small effects.