New research has mapped the cell types that specialize to form reproductive organs in both sexes, identifying key genes and ...

A new scientific review challenges the widespread idea that certain physical features in women serve as biological signals of ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and feminine ...

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 ...

COLUMBUS, Ohio – A lab study in crickets has revealed sex differences in how the insects direct their nutritional resources to increase chances of generating offspring, finding that females prepare ...