Sexual selection, the theory that competition for mates between individuals of the same sex results in differential mating and reproduction.

A marriage between 2 individuals of the same sex is contrary to the public policy of this State.

The statute at issue here makes sodomy a crime only if a person "engages in deviate sexual intercourse with another individual of the same sex."

A marriage contracted between individuals of the same sex is invalid in this state.

Homosexuality in Western popular thought over the course of the 20th century has generally referred to sexual acts between individuals of the same sex.

The participants are the individuals who sign up for the speed dating event and interact with each of the 9 individuals of the opposite sex.

Some cruise lines and tour operators offer to match up individuals of the same sex, but typically limit their compatibility check to smoking preference.

These traits are believed to help an individual outcompete another individual of the same sex.

However, this does not indicate that sexual behaviors between individuals of the same sex were not practiced.