This is a preview. Log in through your library . Abstract Because homologous traits of males and females are likely to have a common genetic basis, sex-specific selection (often resulting from sexual ...

From the same DNA, different genders can boast dramatically different characteristics. Dung beetles are helping scientists understand how. robertharding / Alamy Picture a lion: The male has a ...

Cris Ledón-Rettig is affiliated with Indiana University, Bloomington. Picture a lion: The male has a luxuriant mane, the female doesn’t. This is a classic example of what biologists call sexual ...

Although secondary sexual traits are commonly more developed in males than females, in many animal species females also display elaborate ornaments or weaponry. Indirect selection on correlated traits ...

Picture a lion: The male has a luxuriant mane, the female doesn’t. This is a classic example of what biologists call sexual dimorphism – the two sexes of the same species exhibit differences in form ...

In addition to size, another example of a sexually dimorphic trait between male and female Florida Red-bellied Cooters is claws. On males, right, the claws tend to be longer, a trait they make use of ...

Researchers have shown that sex differences in animals vary dramatically across species, organs and developmental stages, and evolve quickly at the gene level but slowly at the cell type level.