The concordance rate for gay fraternal twins is more than twice ...

[craiczarry]

The concordance rate for gay fraternal twins is more than twice as high as for non-twin brothers, lending support to the idea that ____.
 
  a. environment plays a large role in the development of homosexuality
  b. homosexuality is mostly biologically driven
  c. being a twin increases one's chance of being homosexual
  d. being a twin decreases one's chance of being homosexual

Question 2

The largest twin study to date suggests that for men, genetic factors control between ____ of their sexual orientation.
 
  a. 2 and 7 c. 34 and 39
  b. 17 and 22 d. 51 and 56

[trog]

Answer to Question 1

ANS: A

Answer to Question 2

ANS: C

[craiczarry]

Thank you!

[trog]

Happy to help