Here we have your precise error on display. It is exactly wrong that biological sex is socially constructed at all. Sex is probably the most important concept in biology given the essential nature of reproduction to perpetuation of species , i.e. Avoiding extinction.

LGBT'er : "a "Marxist" sounds like a paid spokesperson for the Christian Coalition "///

CB: I'm a paid spokesperson for Darwinian evolution and biology and anthropology at a college. What I'm espousing is dialectical MATERIALISM , Marxism. Your position is the "Marxist" post-modernist literary criticism one .

Here we have your precise error on display. It is exactly wrong that biological sex is socially constructed at all. Sex is probably the most important concept in biology given the essential nature of reproduction to perpetuation of species , i.e. Avoiding extinction.

Non-human species do not have gender, because they don't have culture, language, symbols. Gender is culturally determined . Animals have only sex.

There are only two biological sexes, and it is impossible for an individual to transfer from one to the other . The two are complementary opposites, two sides of a coin , a biologically derived division of labor ( a labor of love ; viva la difference, we dialecticians say). Sexual reproduction originates one billion years ago . Before that life reproduced by cloning . Sexual reproduction was selected for because it produces offspring that are more diverse. This is all a materialist or scientific understanding of sex. Hate to break it to you.