Biologists have long pondered why males in most species are more colorful than females. Darwin's theory of sexual selection ...

Females and males differ in many ways and yet they share the same genome. The only exception is the male Y chromosome. Using beetles as a study system, new research shows that despite of the Y ...

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 ...

In an evolutionary battle of the sexes, male fruit flies have sharpened their eyesight to avoid being tricked by females seeking food gifts while pretending to be fertile. To increase the chance that ...

Scanning electron micrographs of Drosophila simulans (top) and D. mauritiana (bottom) posterior lobes extending from the genital arch over the claspers. Fruit flies have provided scientists with new ...

Understanding the evolution of insect mating behavior is essential for explaining how early insects adapted to life on land.

Males have nipples because these develop in the womb before embryos develop a sex. By the time a Y chromosome distinguishes a fetus as male, the nipples have already developed. Almost everyone has ...

Evolution, Vol. 71, No. 10 (OCTOBER 2017), pp. 2359-2369 (11 pages) Although sexual selection and sexual conflict are important evolutionary forces in animals, their significance in plants is ...

Pokemon fanart is often mistaken as the legitimate art style of the Pokemon in the franchise. Some are good while others need improvement. Regardless, it's always interesting to see a fresh design of ...

We've all been bitten by a mosquito at one point or another. And, if you have, then that mosquito was a female, as male mosquitos don't have strong enough mouth parts to pierce the skin and suck our ...

Females and males differ in many ways and yet they share the same genome. The only exception is the male Y chromosome. Using beetles as a study system, new research from Uppsala University, now ...