In a bizarre twist of evolution, some fish have been found to be able to control which sperm fertilizes their eggs in order to have the best offspring. According to a study published in the journal ...

The female reproductive system includes organs that produce hormones like estrogen and progesterone. Ovaries release one mature egg each month during ovulation. Fallopian tubes transport the egg from ...

The cellular biology of reproduction is often depicted as an epic journey, in which millions of intrepid sperm fight to be the first to claim the ultimate prize: the chance to fertilize the egg, which ...

The gut-brain axis describes the two-way communication between the neurons that make up the central nervous system, which includes the brain, and the so-called peripheral nervous system, which ...

But science is beginning to learn that various chemicals in the female reproductive system can facilitate – or sabotage – that sperm’s chance for victory. And it appears to happen at an early stage in ...