Parent's genes to shape child`s behavior how?

The team reports that certain groups of cells in the brains of mice rely exclusively on the mother's copy of a gene that is needed to produce essential chemical messengers in the brain called neurotransmitters.

After identifying this unexpected switch in parental control of a single gene, the team went on to demonstrate that it had consequences for behavior & found that each parent's gene affected sons and daughters differently: certain decisions in sons were controlled by their mother's gene, whereas fathers had control over some decision-making in daughters.

Papers first author said "The revelation that maternal and paternal alleles of the same gene along the brain-adrenal axis could have disparate, or possibly even antagonistic, phenotypic consequences on behavior is an intriguing observation,". Hence concluding that this finding is a first step toward understanding how a parent's genes may affect more routine behaviors and related health conditions in people, from mental illnesses and addiction to cancer and Alzheimer's disease.