At puberty, the ____ produce(s) most of the sex hormones.

Alfred Kinsey relied most on which technique in conducting his sexual research?

According to Robert Sternberg’s triangular theory of love, “commitment” can ____.

Emergency contraceptive pills are essentially ____.

Almost ____ of same-sex couples include one partner over the age of fifty-five.

About ____ of the fluid that is ejaculated from the penis is sperm.

Pain during intercourse can be caused by a number of problems, including: 

In twenty-nine states in the U.S. it is legal to ____ based solely on sexual orientation.

Almost ____ of same-sex couples include one partner over the age of fifty-five.

Active prostitutes are ____ times more likely to be murdered than women of a similar age and race.