Science news articles about 'human sex'

... populations in order to further our understanding of human sex roles." Dr. Brown and colleagues examined ... male and female reproductive success in 18 human populations. While male reproductive success ...

... conserved enzyme is also found in humans. In species ranging from insects to humans, sex chromosomes, the famous X and Y, are responsible for determining gender. Females have two copies of the X ...

First global study on human sex ratios finds more girls born at warmer latitudes

... Penisology. Everything you never wanted to know about sex. He talks about the strange world of animal mating and looks at the science of human sex. Thomas Steitz of Yale University is a ...