kengr: (Default)
kengr ([personal profile] kengr) wrote2009-08-20 03:56 pm
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So much for genetic sex being obvious..

.. or even "controlling".

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2190741

Basically a woman who has been pregnant twice and delivered two healthy kids without medical intervention. And *she* is XY/XO. And one of her daughters is XY.

Tell me again about "XY = male, XX=female".