If genetics is the most important determinant of sexual orientation,which set of brothers will have the greatest likelihood of both having homosexual orientations?
A) identical twin brothers
B) nonidentical twin brothers
C) nontwin brothers
D) adopted brothers

Question

Quizplus · Accepted Answer

Research has shown that identical twin brothers have a higher likelihood of both having a homosexual orientation compared to nonidentical twin brothers, nontwin brothers, or adopted brothers. This suggests that genetics play a significant role in determining sexual orientation.

If Genetics Is the Most Important Determinant of Sexual Orientation,which