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.

Question

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.

Quizplus · Accepted Answer

The graph shows a distribution of gene effects, with the majority of genes having a small effect on the complex trait. Therefore, option E is the accurate statement. Option A is incorrect because most genes have small effects, not large effects. Option B is also incorrect because most genes have small effects, not large effects. Option C is incorrect because the graph shows that multiple genes with large effects are not the sole contributors to complex traits. Option D is incorrect because the graph does not show that it is easier to identify genes with a lower magnitude of effect.

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