I am not a genetic russian, glory be. But I was born and grew up there, and claim sufficient knowledge of the place's sociology, culture and history, native proficiency and absolute literacy in language [including complex - and very complex - grammar] etc. And as for "how I managed to improve myself so much" - it took dedicated and concentrated effort to accomplish the transcivilizing. "Dostigaetsya uprazhneniem", as one Myshlaevsky used to say.
I did not know that genotype can "protect" you from the surrounding culture. Hmm, so did you grow without any culture?