The Conversation Gender differences and sexual preferences are frequently a point of conversation. What produces the differences between men and women? Are they trivial or profound? Are they genetic or environmental, or both?
Some people claim that, genetically, men are more closely related to male chimpanzees than to women. Others discount sex differences because theyâre determined by a single gene, called SRY, on the Y chromosome.
But the key to difference between men and women â and chimps â lies not just in the number of their differing genes but in what these genes do.
A little background
Let me first explain a bit about genes and chromosomes. Mammals (all vertebrates, in fact) share pretty much the same collection of about 20,000 genes. Each of these is a short stretch of DNA whose base sequence is copied into RNA, and then translated into a protein.
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