My use of intersect was not fully articulated, thus unclear. My focus is genetic, not sociological. That is, I'm not saying that the rate of monogamy and rate o

My use of intersect was not fully articulated, thus unclear. My focus is genetic, not sociological. That is, I'm not saying that the rate of monogamy and rate of reproduction are causing each other. Rather, the intersection that I have in mind is whether the two things would have synergistic impact on allele frequencies (i.e., demographic structure). In the extreme, if a population stops reproducing, sexual selection doesn't occur (genetically) even if all sort of interesting sociological phenomena occur.