There appears to be a genetic basis in the parenting habits of some types of mice - maybe it goes well beyond that.
Dieter Lukas, an evolutionary biologist at the University of Cambridge who was not involved in the research, hailed the study as a sophisticated tour de force, saying that uncovering these links “is like designing a tool to follow individual threads through a large colorful tapestry.”
The findings may one day help scientists make sense of how human couples bond and care for their children. Mammals share many of the genes governing the production of hormones and neurotransmitters in the brain.
Variations in how they function may explain why most species are promiscuous, why a few are monogamous — and why some, like humans, are somewhere in between.
The paywalled paper in Nature