Experts Reveal Science Behind "Warrior Gene"

KTLA - Los Angeles

In a newly released video, admitted serial killer Itzcoatl "Izzy" Ocampo credited what he called "the kill gene" as one of the reasons behind an alleged series of fatal stabbings. It`s possible Ocampo had never heard of what`s more commonly known as the "warrior gene" when he uttered those words, but the "warrior gene" - a variant of the MAOA gene - and has been linked to the brain patterns of psychopaths. Chip Yost reports for the KTLA 5 News at 10 p.m. on Thursday, May 1, 2014.