Which of the following is an accurate statement regarding the difficulties in studying the effects of single genes on personality?
A) Researchers have been unable to identify any single genes that have an influence on personality, so studies of heritability are generally impossible.
B) Most aspects of personality are affected by numerous genes that exert their influence in concert with each other.
C) Variations in a single gene are limited to their influence to a single personality trait, so the relationship between multiple traits is not something of interest to this sort of research.
D) Variations in a single gene can influence a personality trait by as much as 90%, so it can be virtually impossible to identify that one gene.

Question

Quizplus · Accepted Answer

Most aspects of personality are polygenic, meaning they are influenced by many genes working together. This makes it difficult to isolate the effects of a single gene on personality. Option A is incorrect as there is evidence that genes do contribute to personality traits, but it is difficult to pinpoint the exact genes involved. Option C is incorrect as many personality traits are interrelated and influenced by multiple genes. Option D is incorrect as while genes can have a significant influence on personality, it is uncommon for a single gene to have such a large effect.

Which of the Following Is an Accurate Statement Regarding the Difficulties