How many kinds of sex are there?

Legally speaking, there are two sexes. They are men and women.

There are many ways to define gender. Strictly speaking, an individual must have at least six gender patterns. Only when these six gender patterns are unified can he determine his true sense of male or female, otherwise there will be gender ambiguity or gender ambiguity. The six gender patterns in biology include chromosome gender, gene gender, gonad gender, genital gender, psychological gender and social gender.

Gender is a comprehensive concept including biology, sociology and psychology. On the one hand, gender refers to the anatomical differences based on the biological characteristics of animals such as men, women and bisexual people, that is, physiological gender. On the other hand, gender also refers to the division of gender roles based on femininity, masculinity or non-binary temperament, that is, social gender. In other words, the concept of gender has not only a certain biological basis, but also a complex and diverse basis of humanities and social sciences such as sociology and psychology, and is not a simple concept of "duality between men and women".