From ZW yolk to XY milk - origin of mammals

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enarees
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From ZW yolk to XY milk - origin of mammals

Post by enarees » Wed Oct 29, 2008 6:00 am

ZW(female) ----------------------> XY(male with yolking/lactating potential)
___________parthenogenesis

After that yolking/lactating potential were transfered to new females(XX).

The sex chromosome rebus of platypuses reveal recent ZW - nXY transformation.
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AstusAleator
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Post by AstusAleator » Wed Oct 29, 2008 3:45 pm

Care to explain in english?
What did the parasitic Candiru fish say when it finally found a host? - - "Urethra!!"
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enarees
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Re:

Post by enarees » Sat Nov 01, 2008 5:56 am

AstusAleator wrote:Care to explain in english?


The word is about the origin of the mammals from egg-laying animals.

The reason is specific parthenogenesis.
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