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« April 16, 2007 | Main | April 18, 2007 »

17 April 2007

Intersex Twins

The Economist and Time Magazine recently published interesting articles on a new type of twins. Apparently some twins are neither identical nor fraternal, but are `semi-identical'. That is, one twin is male and the other `intersex' (both male and female). You can read a short discussion on the biology in the articles, which also note that it’s unknown how common this type of twins is. More to worry about for believers in twin studies (for other problems, see this earlier post).

Posted by Sebastian Bauhoff at 4:31 PM