> Which genes are selected from which progenitor is random. IIRC that's not completely true. In mammal females, there is competition at the chromosome level to

> Which genes are selected from which progenitor is random. IIRC that's not completely true. In mammal females, there is competition at the chromosome level to determine which member of each pair will end up in the first polar body (which is discarded) and which one ends up in the secondary oocyte (which then splits up to become the ovum and the secondary polar body).