gender
No, Animals Do Not Have Genders
How do we know that gender is not simply a biological fact? What makes it cultural, rather than analogous to sex-differentiated behavior in animals?
Why Sex Is Mostly Binary but Gender Is a Spectrum
A short genetic history of one of the most profound dimensions of human identity.
This Gender Mystery Starts Nine Months Before Birth
The ratio of boys to girls at conception has been misunderstood for centuries.