Twin research suggests into the basis of homosexuality suggests that
A)there appears to be no genetic influence on sexual orientation for males or females.
B)genetics can account for approximately half of the determination of sexual orientation.
C)sexual orientation is almost entirely determined by genetics.
D)genes appear to determine sexual orientation in females,but not in males.

Question

Quizplus · Accepted Answer

Twin research suggests that genetics can account for approximately half of the determination of sexual orientation. Studies have found that identical twins, who share 100% of their genes, have a higher concordance rate for homosexuality than fraternal twins, who share only 50% of their genes. However, this also suggests that environmental factors must also play a role in the development of sexual orientation.

Twin Research Suggests into the Basis of Homosexuality Suggests That