Children get their intelligence from their mothers, claims a new study. Women are likely to transmit intelligence gene to their children because they are carried on the X chromosome. Women have two chromosomes, while men have only one.
Scientists believe that genes for advanced cognitive functions which are inherited from the father may be automatically deactivated.
In some cases, a category of genes known as conditioned genes works only if they come from the mother and sometimes from the father. Intelligence is among the conditioned genes that come from the mother.
Mothers play a significant non-genetic part of intelligence. Studies suggest that a secure bond between mother and child is intimately tied to intelligence.