Several biological theories about gender explain why people are either male or female. Some of these theories include the classic theory of sex determination, the theory of biological determinism, and the theory of evolutionary developmental psychology.
The classic theory of sex determination is the belief that chromosomes determine the sex a person carries. This theory is based on the idea that there are two types of chromosomes, the X and the Y, and each chromosome determines a person’s sex. Dr. Karl Heinrich von Frisch first proposed the theory of sex determination in the early 1900s.
The theory of biological determinism is the belief that a person’s sex is determined by their genes. Dr. Alfred Kinsey first proposed this theory in the early 20th century. The theory of biological determinism states that a person’s sex is a result of the genes they inherit from their parents.
The theory of evolutionary developmental psychology is the belief that a person’s sex is determined by their experiences and environment. Dr. John Money first proposed this theory in the 1960s. The theory of evolutionary developmental psychology states that a person’s sex results from how their brain and body have evolved.
