What measurable differences are apparently related to homosexual versus heterosexual orientation in adult men?
A) Their testosterone levels
B) Their estrogen levels
C) The size of certain parts of their hypothalamus
D) The pattern of dendritic branching in their cerebral cortex

Question

Quizplus · Accepted Answer

Studies have found that the size of certain parts of the hypothalamus, such as the suprachiasmatic nucleus and the interstitial nuclei of the anterior hypothalamus, differ between heterosexual and homosexual men. This suggests that sexual orientation may have a biological basis in some individuals. Testosterone and estrogen levels have also been measured, but the results have not consistently shown differences between heterosexual and homosexual men. Similarly, dendritic branching in the cerebral cortex has been studied, but the results have been inconsistent and not well-established as a clear marker of sexual orientation.

What Measurable Differences Are Apparently Related to Homosexual Versus Heterosexual