Joe Is Homosexual and Has an Identical (Monozgyotic) Twin Named

Multiple Choice

Joe is homosexual and has an identical (monozgyotic) twin named Sam. The following statement is TRUE:

A) Sam is more likely than the general population to be homosexual.
B) Sam is no more likely than the general population to be homosexual.
C) Sam is homosexual also.
D) Sam is only likely to become homosexual if Joe is a positive role model.