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Researchers do know from twin studies that genetics plays a role in personality disorders. Environmental factors, such as childhood abuse, neglect and separation from caregivers, as well as brain abnormalities, emotion regulation, impulsivity, aggression and serotonin levels all play a role.ecause many personality domains are heritable, borderline personality disorder may be a result of a genotype interacting with adverse environmental factors. This would in turn lead to the expression of borderline symptoms or other dysfunctional personality traits.
Role of genes in osteoporosis. The study of genes and how they relate to osteoporosis has been an area of study for a long time. Osteoporosis may be affected by many gene variants and how they interact with environmental factors.ew genetic cause of osteoporosis found, rare gene identified. By: Bel Marra Health | Osteoporosis | Tuesday, September 15, 2015 - 17:30 PM. A rare gene â the EN1 gene â has been identified as a potential osteoporosis cause by researchers at McGill University.