Why sex with a partner is better

Oregon research shows why a mate provides an evolutionary advantage over self-fertilization

		IMAGE: Levi T. Morran, a doctoral student at the University of Oregon, led study that found sex with a male mate is better than "selfing. " Click here for more information.

EUGENE, Ore. -- (Oct. 21, 2009) -- OK, it takes two for human reproduction, and now it seems that plants and animals that can rely on either a partner or go alone by self-fertilization give their offspring a better chance for longer lives when they opt for a mate.