Tomorrow we'll talk to two guests who look at some of the science behind why people are gay or straight. It's not just gay people who react when they hear that a trait is determined by genes or choice.
Weigh in: When scientists say something in your life is genetic or not, how do you respond — whether it's sexuality, intelligence, or health? Add your comments below or leave a message at 1-877-MYTAKE.
Tomorrow, we'll hear from you and talk to Simon LeVay, author of "Gay, Straight, and the Reason Why: The Science of Sexual Orientation."