Neanderthals are fair and have got melanin deficiency. The Homo sapiens are dark and rich in Melanin. The homo sapien hybrids are white albinos and have no melanin at all. Melanin is seen in the basal ganglia, substantia nigra and locus coeruleus. They regulate the monoamines, dopamine, adrenaline and noradrenaline. The monoamines are responsible for fear and flight reaction. Melanin regulates brain stem functions like respiration, blood circulation, blood pressure, sexual function, breathing patterns and digestion. Melanin regulates the autonomic nervous system. Melanin also regulates the...