What’s the percentage of Somalis with this gene?Possible..
It's the 2-repeat MAO-A allele that is significantly over-represented in Africans while very low in Eurasians. East Asians also have less serum testosterone levels than Africans.
The 2-repeat allele of the MAOA gene confers an increased risk for shooting and stabbing behaviors.
https://www.ncbi.nlm.nih.gov/pubmed/24326626
The association between the MAOA 2R genotype and delinquency over time among men: the interactive role of parental closeness and parental incarceration
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640317/
Etc