From ZW yolk to XY milk - origin of mammals
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From ZW yolk to XY milk - origin of mammals
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.
___________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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