They don't know any biology or zoology. Nancy Nangeroni, who holds a degree in electrical engineering from the Massachusetts Institute of Technology, agrees. Deciding to dress and live as a woman was not like flipping a switch, she says. It's not spoken, but it's a form of speech that should be constitutionally protected. So the term gender is filled with all sorts of social customs.
Sexual orientation is about who one is attracted to.
In other words, Berman says, a person can have a mixture of traits. You can be male but feel female and be attracted to either men or women. You can be female and feel male and be attracted to either men or women. You can be male and feel male, but be attracted to men. And you can be female, feel female and be attracted to women.