Do not confuse kin selection with group selection. In polygynous species, females tend to be more picky in choosing mates while males are less selective. Mating relationship between one male and one female. Male and female reproductive variance is approximately equal. Monogamy is usually associated with high paternal care.
Many adult males live in a primate troop.
For example, chimps live in multi-male societies. The directional process of evolutionary change. Some genes or allelles become more common over time because of beneficial effects that they have on survival and reproduction. A species' particular habitat, the ecological opportunities they exploit. Includes diet, where they live, when they are active.