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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.
Abstract. Histone-like proteins in bacteria contribute to the control of gene expression, as well as participating in other DNA transactions such as recombination and DNA replication. They have also been described, somewhat vaguely, as contributors to the organization of the bacterial nucleoid.