By default? No. BUT It's possible to detect the genes that turn blacks into violent nigger from infancy. Although yes blacks are retarded by default, as much as 30% of niggers carry a gene that makes them violent with zero impulse control. They call it the "warrior gene".
https://link.springer.com/article/10.1007/s11126-013-9287-x
https://www.sciencedirect.com/science/article/abs/pii/S0191886912004047
>NOTE: The effects of the 2-repeat allele could not be examined in Caucasian males because only 0.1% carried it.
To summarize some points:
>It's not well known what percentage, precisely, Blacks carry the gene.
>It's estimated to vary depending on geographic location.
>In college educated black males - it's found in 1 in 20 (5%).
>In the general population of a prison - it was found in 85% of black males.
>When studied in the general population of Atlanta, it was found that 50% of black males carried the gene.
So in general ut's safe to assume that a plurality of Black Males carry the gene.
The gene, when in *black males specifically* makes them highly susceptible to violent outbursts. In other demographics that ARE NOT black, for the gene to "activate" and impart it's negative/violent tendencies - the host must be pushed through a rigorous and violent childhood environment.
If a White Person carries the gene, as long as they're not raised by violent abusive parents, it shouldn't ever manifest but in Black Males, not only is the environment naturally more violent (which causes the other variations of the allele to activate), but just carrying the 2-repeat variant will impart violent tendancies.
They don't test for the gene and niggers will pretend it's something cool.