I have obtained the Science paper so y'alls can read it.
Science Article Wrote:Sex is hard to explain. Since males cant reproduce by themselves and often contribute nothing except genes to offspring, a population of asexual females can grow at double the rate of a population that reproduces sexually ( 1). Why then, given this cost of males, do most plants and animals indulge in biparental sex? One possible solution is that sex accelerates adaptation; the Red Queen hypothesis, for example, proposes that sex gives plants and animals an edge in the never-ending battle against their coevolving parasites (24). Although researchers have collected empirical field data consistent with the Red Queen hypothesis from a range of natural host-parasite systems, direct experimental evidence that coevolving para-sites select for sex in their hosts has proven elusive. On page 216 of this issue, Morran et al. ( 5) pin down some of that direct evidence.REF: http://www.sendspace.com/file/oheavi
