Describe the general pattern found in most species with resp

Describe the general pattern found in most species with respect to the variance in reproductive success between individuals when comparing males versus females. What causes this difference in variance?

Solution

Bateman\'s experiments with drosophila proved that females gain nothing by mating with more than one male and males gain by mating with many females. Secondly, it also proved that there is greater variance in the reproductive success of males than of females.

This is due to the greater dependence of males for their fertility on the frequency of insemination is an almost universal attribute of sexual reproduction leading to the evolution of an undiscriminatory eagerness in the male and discriminatory passivity in the female.