A research team based out of King’s College London believes it may have discovered a gene which explains why certain males who are abused as children go on to develop criminal behaviour.

The research has examined a variation on the male X chromosome.

The gene is responsible for making the enzyme which breaks down brain chemicals which lead to aggressive behaviour.

The research has shown that men with a "low activity" version of this gene are more likely to respond badly to childhood abuse.

85% of the group studied went on to develop some form of anti-social behaviour.