A person may think they cannot break the cycle of sexually deviant behavior as society has determined it their lot in life so they conform to this perception. Still, others blame crime in general on the hierarchal make-up of society. that law is specifically made by the aristocracy to rule over those in the lower social classes.Among the biological and physiological explanations for crime is the Behaviour Genetics Theory which postulates a biological explanation for crime. While the genetic make-up of an individual does not induce any specific actions, anti-social behavior can be facilitated by neurotransmitters in the brain and hormonal imbalances which generate tendencies to act in a particular way. Low self-control is strongly and inversely related to the neurotransmitter/neuromodulator serotonin, and that serotonin level is heritable (Robinson, 2004). Abnormal serotonin levels have been shown to be an origin of criminal behaviors of all types of crime including and possibly especially including rape because an individual lacks the natural ability to control their impulsive thoughts thereby acting upon them. Everyone has thoughts they would never act upon. Those with this abnormality tend to act first and think later. Evidence compiled from studies has supported another link between a particular inherited mutant gene and criminal behavior. Instead of high serotonin levels, the neurotransmitters in the brain, because of genetic abnormalities, may produce low levels of an enzyme which causes interruptions in signals within the nervous system and the brain. Urinalysis of subjects in the Dutch study, all of whom were related and demonstrated aggressive and antisocial behavior, showed abnormal levels of metabolic products associated with the enzyme (Vinces, 1996). These persons did not have the ability to produce this enzyme. This genetic defect may be at least a contributing factor leading to deviant behaviors.