[Solved] An ATP molecule includes three phosphate groups. Sexual Orientation: A person's emotional, romantic, or sexual attraction to individuals of a certain gender. Erotic Plasticity: The degree to which an individual's sex drive can be changed by societal or environmental factors. Homosexual Relatives: Family members who are attracted to individuals of the same sex. Maternal Relatives: Family members related through one's mother's side, including grandparents, aunts, uncles, and cousins on the mother's side of the family.