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 ...

The following outlines aspects of the female reproductive system, including the internal and external organs, the menstrual cycle, the egg, and reproductive hormones. The menstrual cycle is a monthly ...

During mammalian reproduction, millions of sperm undertake a journey that only one will finish. This journey to fertilization has been commonly viewed as a race: a sea of sperm competing to get to the ...

The Amazon molly is an all-female fish that ditched sexual reproduction entirely, thriving for over 100,000 years through ...