This is a preview. Log in through your library . Abstract When an individual’s reproductive success relies on winning fights to secure mating opportunities, bearing larger weapons is advantageous.

The second science -- Simple selection -- The genetic and ecological context of selection -- History, chance, and necessity -- The rate of genetic deterioration -- The rate of environmental ...

Evolution can perform spectacular makeovers: today's airborne songbirds descended from the wingless, earthbound dinosaurs that roamed millions of years ago, for example. But some organisms seem to ...