Sexual Selection

A theory propose* by *Darwin, that in some *species male compete for mates and that characteristic enhancing their success in mating wouli have value and be perpetuated irrespei tive of their overall value in the striiggl for existence. Such "characters would used either in male display to attract males (inter-sexual selection) or in comto between rival males lintra-sexual selec¬tion), and both could act at the same time. See aiso HANDICAP PRINCIPLE and RUNAWAY HYPOTHESIS.