AP BIOLOGY

Detailed explanation-1: -Men fight for survival, dominance, and personal gain, but they also fight just for fun. Anthropologists have found that the more conflict is culturally condoned, the more boys and men tend to fight, roughhouse, and engage in arguments simply because it feels good.

Detailed explanation-2: -In many species, males try to woo females with signals like calls, colouration or long tails, or they try to monopolise access to females by fighting other males with weaponry like horns or antlers. This competition for mates helps drive the evolution of these species, in a process called sexual selection.

Detailed explanation-3: -In a small number of species, females compete for males; these include species of jacana, species of phalarope, and the spotted hyena. In all these cases, the female of the species shows traits that help in same-sex battles: larger bodies, aggressiveness, territorialism.

Detailed explanation-4: -Bateman’s principle, which states that male reproductive success should increase with multiple mating, whereas female reproductive success should not, has long been used to explain sex differences in behavior.