Ground beetle genitals have the genetic ability to get strange. They don’t

A new look at the genetics of sex organs finds his vs. hers conflicts over length and width

beetles

SEX AND WAR  Among ground beetles (Carabus maiyasanus), the sizes of male and female genitals stay in sync despite genetic quirks that allow for more evolutionary freedom.

Teiji Sota/Kyoto Univ.

A new peek at the genetics of beetle genitals reveals the underpinnings of a battle of the sexes.