How come that females started to choose “weaker” less aggressive males?
“Possible mechanism of sexual selection might be gleaned from sexual behavior and secondary sexual characteristics of male gelada baboons. A handful of males grow rapidly at puberty, develop distinctive golden manes and become almost twice the size of the females. These males usually succeed in acquiring their own harems. After a relatively brief but intense reproductive life and constant conflicts with rivals, they are displaced by younger stronger males and never breed again. However, when many such males are present in the social group, an adolescent male may adopt a distinctly different phenotype and behavior – he remains female-like in size and appearance, does not develop the mane and acts as inconspicuous as possible. Such males hang around the big males’ harems, mating with females when harem-owner is distracted. Because small and sneaky male never has to fight for females, he is likely to have longer, if less intense sexual life, and in the long run he even may achieve better
