Memetic vs. Genetic Evolution

There’s a correlation (negative, strong) between number of children and level of education.  Causation is really unimportant here, just that the correlation holds.



So consider – those with more education are likely to have certain traits and characteristics. Certain memes, if you will. Yet it is likely that they will not pass along as many of thier genes.



At what point will it be that memetic evolution – the passing along of ideas, regardless of biology, makes that difference in reproductive rates moot?