Länk - Genernas kamp
Instead, researchers have proposed that these paternally imprinted genes may reflect "parental conflict", explained nicely here:
According to this "conflict theory," the paternal genes endeavor to obtain maximum resources from the mother, at the expense of future offspring who may have different fathers... The conflict gets played out most visibly in metabolically costly processes, such as growth and development of the placenta and postnatal feeding of the offspring... [Thus] the paternal genome seems to code for a big placenta and robust offspring.
Läs mer: The Anterior Commissure: two little genes and great big offspring