Psychopath traits genetic as in passed down from grandpa the jd?

Not usually: While many personality traits and both major psychiatric diagnoses (schizophreniz and bipolar disorder) are often mainly genetic, psychopathic behavior traits are usually produced by traumatic experiences, often multiple and/or recurrent that happen during key developmental periods during early, often pre-school years. There may also have been events or exposure to agents leke drugaalcohol, even.

Possibly: There is a genetic component in personality disorders such as psychopathy (AKA antisocial personality disorder) however it's not a question of genetics or environment, it's usually a combination of the two.