Sperm Of A Feather Flock Together

Males compete for females’ attention. It’s a pattern seen throughout the animal kingdom. But new research shows that kind of male-male competition persists even after animals have mated.

Biologist Heidi Fisher of Harvard University sees that competition in deer mice. As it turns out, female deer mice are promiscuous. They will frequently have multiple mates when they go into heat…

Read more here (National Public Radio)