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Example of Runaway Selection. Theory of random sexual selection of mates. Used to explain passing on of useless or 'expensive' genes which may create liabilities. It's called 'runaway' selection because the gene traits carried on may become liabilities if carried to extremes. The genes may in fact exaggerate physical characteristics which makes the animal less able to survive, rather than more so, in normal evolutionary theory.
ciality that are otherwise hard to account for. Social selection. is the subtype of natural selection that results from the social. behaviors of other individuals. Competition to be chosen as. a social partner can, like competition to be chosen as a mate, result in runaway selection that shapes extreme traits.