In fact, from an evolutionary perspective, sex is more important than life itself. The entire review is available at: These are the evolutionary roots of the war between the sexes. We have just been presented with two competing ideas: The gorillas eat the food on the ground, leaving the chimpanzees dependent on fruit trees. Coyne, "Of Vice and Men: These traits are now almost universal. But situations such as the one he studied are relatively rare; so why is sexual reproduction so widespread? It's a fascinating question.
Male and female roles are not set in stone. They, too, deal in their own dogmas, and not in propositions of science. In fact, from an evolutionary perspective, sex is more important than life itself. This is where female choice comes in. Their goal is to find organisms with a different specialty--providing the nutrients life requires. His hypothesis is that this is due to the greater genetic variability that comes from exchanging genes with other members of the population. That's how, for humans, sex became fun, and parenting rewarding. Michod and Bruce R. But many biologists also criticize Miller's specific ideas about the evolution of the human brain. The Stephen Jay Gould quotation is from "Sociobiology: So evolutionary biologists continue to "scrounge for data to support one or the other of the warring theories of sex. Only time will tell if we'll be as successful at guiding our future as evolution has been. The female is now torn, according to Emlen, between a desire to have a faithful mate who will help her raise her young, and a desire to have her chicks sired by a male of higher genetic quality. Then a panel of young women smells the shirts and rates their sex appeal. But did differences in behavior lead to the origin of two species? Charles Darwin was the first to recognize the evolutionary significance of sex. By ending with a husband and wife who are raising a child unrelated to them, this episode actually raises an issue that is even more of a problem for Darwin's theory than the existence of sex: At a deep biological level, males and females want different things, regardless of how things appear on the surface. As we watch actors in hairy costumes cross an African plain, the narrator acknowledges that this theory of the origin of bonobos "is little more than interesting speculation. These traits are now almost universal. But situations such as the one he studied are relatively rare; so why is sexual reproduction so widespread? They're to advertise each individual's fitness, its goodness as a mate, to the opposite sex. According to the researchers, the women consistently prefer the shirts from those men who differ most from them in their immune genes. Evolutionary Psychology "Evolutionary psychologists begin by pointing out," says the narrator, "that regardless of the culture in which we grow up, we all tend to respond the same way to a surprising variety of things. Sometimes that requires paying as much attention to behavioral traits as to physical ones. The scene shifts to a performance of the "Hallelujah Chorus" from Handel's Messiah, as the narrator says: Sexual selection is supposed to explain why male peacocks have large, colorful tails--and females don't.
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