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The debate about the causes, language, and social meaning of gender identity, including the role of biology and ideology.
is not a voluntary lifestyle decision; mainstream medical and advocacy sources characterize as an internal, deeply felt sense of self rather than a conscious choice . There are active debates about ca...
The short, evidence-based answer: under the classical biological definition tied to gamete type—small sperm-producing versus large egg-producing cells—there are two sexes in sexually reproducing speci...
Current research finds multiple lines of biological evidence — genetic variants, prenatal hormone pathways, and brain structural and functional differences — that together suggest gender identity has ...
Scientific and medical literature offers multiple lines of evidence that support the claim that many trans women are women — including neuroanatomical, genetic/hormonal, epidemiological, clinical, and...
Biologically, scientists most commonly define sex by reproductive role—who produces small, mobile gametes (sperm) and who produces large, nutrient-rich gametes (ova)—which yields two sexes, male and f...