Mendelian is…. outdated. Dominant/recessive doesn’t work on the level of behavioural traits we observe, for the same reason there isn’t a “gene for X” as the papers declare, the interactions alone require a great deal of processing power and the outcomes will become clear over the coming decades.
But the gist in this is good.
“The study is the first in a series that will examine contributions of genetic and environmental variations to criminal behavior. Published in Psychiatric Genetics, this study examines the role of monoamine oxidase A (MAOA), which has been linked to aggression, violence, and various types of childhood adversity in prior research. The study found MAOA genotype interacted with childhood adversity to predict self-reported criminal behavior and arrest rates for both property and violent crime.
“These findings indicate that gene-by-environment interactions are important for understanding variation in crime amongst populations with high base rates of criminal activity,” said Todd Armstrong, principal investigator of the study.”
Why do I have a feeling Psychiatric Genetics is going to become a bigger publication over time…?