erm you end up with four different  er types of er reproductive strategies which are of monogamy, polygyny, polygamy and polyandry and the first one monogamy is when you have one male and female and er this minimizes the differences in reproductive success and the way it does that is because erm it, it minimizes the difference between the sexes because monogamy takes the limitations of the male erm to reproduce only with the one female so the male to female ratio of reproductive success  the same in monogamy, and er what happens to that is this little  in er  more equal towards their parental investment .