Behavioral geneticists
A) have identified the variations in DNA sequences associated with most psychological disorders.
B) argue that the effects of the environment account for only a small amount of variation in behavior.
C) are still limited to investigating the impact of genes on complex characteristics indirectly.
D) have identified the genes that underlie most polygenic traits, such as intelligence and personality.

Question

Quizplus · Accepted Answer

Behavioral geneticists are limited to investigating the impact of genes on complex characteristics indirectly since they cannot manipulate genetic variations in humans. While they have identified some genetic variations associated with certain psychological disorders, they have not identified all variations, and the effects of the environment still play a significant role in behavior. While there have been some studies identifying genes associated with intelligence and personality traits, these traits are thought to be polygenic, meaning that they are influenced by multiple genes in combination with environmental factors, and the genetic underpinnings of these traits are not yet fully understood.

Behavioral Geneticists