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https://pubmed.ncbi.nlm.nih.gov/24326626/
doi: 10.1007/s11126-013-9287-x.
The 2-repeat allele of the MAOA gene confers an increased risk for shooting and stabbing behaviors
Kevin M Beaver 1, J C Barnes, Brian B Boutwell
Affiliations expand
PMID: 24326626 DOI: 10.1007/s11126-013-9287-x
Abstract
There has been a great deal of research examining the link between a polymorphism in the promoter region of the MAOA gene and antisocial phenotypes. The results of these studies have consistently revealed that low activity MAOA alleles are related to antisocial behaviors for males who were maltreated as children.
https://www.researchgate.net/public...ncarceration_and_lifetime_antisocial_behavior
The effects of the 2-repeat allele could not be examined in Caucasian males because only 0.1% carried it.
What percentage of black males carry the 2-repeat allele?
Analyses revealed that African-American males who carried the 2-repeat allele were, in comparison with other African-American male genotypes, significantly more likely to be arrested and incarcerated.