Which of the following statements about homosexual behavior is true?
A) Twin studies indicate that there is no genetic component to homosexual behavior.
B) The genes determining homosexual behavior has been identified on the Y chromosome.
C) Most studies on homosexual behavior have only looked at males.
D) A single gene is responsible for homosexual behavior.
E) Homosexual behavior shows higher concordance in fraternal twins than in identical twins.

Question

Quizplus · Accepted Answer

While there have been studies on both male and female homosexual behavior, the majority of research has focused on males.

(Note: None of the other statements are true. Twin studies suggest a genetic component to homosexual behavior, but the specific genes have not been identified. There is no evidence of a single gene responsible for homosexual behavior. Concordance is higher in identical twins than fraternal twins.)

Which of the Following Statements About Homosexual Behavior Is True