Promiscuousness results in genetic ‘trade-up,’ more offspring

Promiscuousness results in genetic ‘trade-up,’ more offspring – ScienceBlog.com

It’s all about the grandkids! That’s what a team led by an Indiana University biologist has learned about promiscuous female birds and why they mate outside their social pair.

Many humans find the idea of mating for life a romantic ideal, but in the natural world, non-monogamous relationships may have their benefits. According to new research published online today (Aug. 31) in Proceedings of the Royal Society B, IU postdoctoral research associate Nicole Gerlach and colleagues have uncovered one of the benefits of this promiscuity: more grandkids!

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