So…I just got the latest issue of Discover magazine in the mail and was reading the article “Study the Clones First” when this sentence, differentiating fraternal and identical twins, stopped me cold:
Um…?? What circumstances? For lack of a better description, could there be a sort of hormonal programming dysfunction where one twin fails to ever get the signal to develop as a male and remains female? Although…wouldn’t that just produce a hermaphrodite, or androgen insensitive genetic male?
I’m fascinated to know how on Earth this happens.