A new UC Davis study reveals previously unknown cell types in the female reproductive tract of Drosophila fruit flies. The knowledge could help in studies of fertility in general, and in managing ...

While most animals reproduce sexually, some species rely solely on females for parthenogenetic reproduction. Even in these species, rare males occasionally appear. Whether these males retain ...

Scientists studied the internal anatomy that make a female-male role reversal possible in a group of Brazilian cave insects. By Jack Tamisiea The penis has a variety of peculiar shapes and sizes: the ...