Can't figure out why your toddler is throwing toys at you or hitting his/her sibling? Blame it on genes. The development of physical aggression in toddlers is strongly associated with genetic factors and to a lesser degree with the environment says a study. 'The gene-environment analyses revealed that early genetic factors were pervasive in accounting for developmental trends explaining most of the stability and change in physical aggression' said Eric Lacourse of University of Montreal and its affiliated CHU Sainte-Justine Hospital in Canada. The team worked with parents of identical and non-identical twins to evaluate and compare their behaviour environment and genetics. (Read: Scientists
