Kevin Beaver is an expert in biosocial criminology at Florida State University. He led a research team to study the influence of human genes on crime. They compared the genes of 2000 teenagers in America. Teenagers with MAOA gene mutation are twice as likely to join gangs as those with normal genes, while teenagers with genetic mutation are more likely to use weapons.
Men with MAOA gene mutation are also twice as likely to use weapons as normal people. Gang members with the same genetic variation are four times more likely to use weapons than those without genetic variation. Beaver said that although this gene can't predict every possible gang member, it can predict who tends to be a gang member.
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A controversial new study at Oxford University points out that some men are naturally more likely to molest children and commit violent attacks. This experiment points out that "sexual crime" has been written in the gene, and the brothers of men who have committed sexual crimes six times are more likely to commit rape or assault than ordinary people.
Researchers point out that fathers and brothers of sex offenders should receive psychotherapy and learn interpersonal skills, such as respecting each other's principles and bottom lines, in order to curb aggressive behavior and protect the public. It is found that 40% of the risk of sexual crimes comes from genes, and the remaining 60% comes from personal and environmental factors, such as childhood abuse, bad parenting experience, economic environment and cultural education. "Of course, we are not talking about finding genes corresponding to sexual crimes or similar things."
Professor Seena Fazel from the Department of Psychiatry at Oxford University said, "What we found is that reliable evidence based on large-scale population experiments can infer that genetic factors have a significant impact on the higher risk of sexual crimes."
Baidu Encyclopedia-Crime Gene
People's Daily Online-Oxford University research claims that some men have "sex crime genes"