The study I cite was published in Sep 2016, so it predates Trump.
https://en.wikipedia.org/wiki/Pioneer_Fund https://en.wikipedia.org/wiki/History_of_the_race_and_intell...
Edit: It strikes me that the strawman argument you've constructed is a perfect example of left-wing science denial. The endemic use of the technique in fields like psychology, criminology, biology, is something you prefer to ignore.
Let's say it's part of the causal chain, but also your cells don't even have the same genome, it mutates over time, women integrate cells from their children, so it gets messy.