Simple sex and the birth of gender - Battle of the Sexes in the Animal World

Simple sex and the birth of gender - Battle of the Sexes in the Animal World - BBC

About a billion years ago simple single cell animals mated and everything was a lot more simple. Until a quirk of evolution changed all that, resulting in one of the most significant events in life on earth... Subscribe to BBC Earth: http://www.youtube.com/subscription_center?add_user=BBCEarth BBC Earth YouTube Channel: http://www.youtube.com/BBCEarth BBC Earth Facebook http://www.facebook.co ...

Uploaded:2015/04/08 20:09:11 +0900 (JST) 　　 Views:3　　Comments:0　　

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