This article denies basic observable facts. FACT: There are gay men who are very masculine and gay women who are very feminine. FACT : There are hereto men who act feminine and hetero women who act masculine. There are so many examples : Prince, David Bowie. George Sands Miley Cyrus, Eddie Izzard. FACT : Gender "expression" is a fashion statement based on how people dress, and guess what? People dress differently than other aspects of their seuality. They are separate based on OBSERVATION OF REAL LIVE HUMANS, not an extrapolation of a random prenatal theory. On that note, the testosterone levels in EVERYONE changes a lot, and depending on WHEN and how many OTHER hormones of which I'm sure the author is unaware, yes it is long and complicated and changes for many reasons.