My college courses included a genetic psychology component. Identical twins raised apart tested +/- 5 points of the same IQ regardless of whether they were raised by wealthy or poor families. Where a discrepency was found, the low birth weight twin was found to have the lower score and attributed to shared placental blood giving the lower birth weight twin the "backwash". Mental illness also tends to run in families along with criminal tendencies. Certainly some of it is multi-generational/cultural/social factors, but the genetic component remains an unalterable contribution.
You’re only detailing the failure of the liberals to bring about improvement in the lot of a people group that they have subjected to the soft bigotry of low expectations.
Only for animals and plants. No IQ genetic component for humans.
Didn't you get the memo?? LOL