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 ...

University of Missouri researchers have shown how an all-female fish species called the Amazon molly defies the long-held ...

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 ...

University of Missouri researchers have shown how an all-female fish species called the Amazon molly defies the long-held ...

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 ...

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 ...