While a sex change may entail complicated reconstructive surgery in humans, it takes species like clownfish little effort. Erem Kazancioglu, a Ph.D. student, and his advisor Susan Alonzo, an assistant ...

Hoeven’s wrasse (Halichoeres melanurus) is one of many species of reef fish that begin adult life as females and later switch to being functionally male. UC Davis researchers have shown that ...

Most animals, like humans, have separate sexes -- they are born, live out their lives and reproduce as one sex or the other. However, some animals live as one sex in part of their lifetime and then ...

Scientists love to group things. We also like to name things. We also like to plot data on bivariate graphs. On really crazy nights, we let our hair down, well not me per se but other scientists with ...

A new study by the Institut de Ciències del Mar (ICM-CSIC) in Barcelona has revealed that gonochorism, or separate sexes, and not hermaphroditism, as proposed by recent phylogenetic work, is the ...

Hawkfish: Hawkfish are protogynous hermaphrodites, beginning life as females and transitioning to males. Northern Cardinal: Northern cardinals have characteristics of both male and female traits ...

On October 3 the new series of Doctor Who will hit TV screens, and for the first time the time-travelling Doctor will be played by a woman: British actress Jodie Whittaker. Her casting created an ...