Also, a quick Wikipedia search on the MAOA gene shows this.
”Several studies have found differences in the frequency distribution of variants of the MAOApromoter repeat between ethnic groups: 52-59% of African American men,[11][10] 48-62% of Chinese men,[12][10][13][14] 62% of Maori men,[9] 57% of Japanese men,[15] and 33-37% of European men[10][11] carried the 3R allele, while 5.5% of Black men, 0.1% of Caucasian men, and 0.00067% of Asian men carried the 2R allele."
Ok so by this dumbass’ rationale, Chinese and Japanese men should be as or more violent than African Americans.
Except…
“However, a large genome-wide association study has failed to find any large or statistically significant effects of the MAOA gene on aggression.[47] A separate GWAS on antisocial personality disorder likewise did not report a significant effect of MAOA.[48] Another study, while finding effects from a candidate gene search, failed to find any evidence in a large GWAS.[46] A separate analysis of human and rat genome wide association studies, Mandelian randomization studies, and causal pathway analyses likewise failed to reveal robust evidence of MAOA in aggression.[49] This lack of replication is predicted from the known issues of candidate gene research, which can produce many substantial false positives.[50]”
…
”The effects of MAOA genes on aggression have also been criticized for being heavily overstated.[56]Indeed, the MAOA gene, even in conjunction with childhood adversity, is known to have a very small effect.[57] The vast majority of people with the associated alleles have not committed any violent acts.[58][59]”
So is this what that fuckwad would qualify as “doing your own research?”
Just asking questions.