MAORIS carry a "warrior" gene that makes them more prone to violence, criminal acts and risky behaviour, a scientist has controversially claimed. Dr Rod Lea, a New Zealand researcher, and his colleagues told an Australian genetics conference that Maori men had a "striking over-representation" of monoamine oxidase - dubbed the warrior gene - which they say is strongly associated with aggressive behaviour. He says the unpublished studies prove that Maoris have the highest prevalence of this strength gene, first discovered by US researchers but never linked to an ethnic group. This explains how Maoris migrated across the Pacific and survived,...