Description Researchers explain that back in evolution before the emergence of Vertebrates the Sea Squirt developed a new chemical in its nervous system that brought about what are now known as cannabinoid receptors. This cannabinoid system in the Sea Squirt was handed down to all Vertebrates including humans. The reason the receptors are called "cannabinoid" is because when the receptors were first discovered in 1988 it was because the THC molecule from Cannabis first identified the receptor by fitting into the receptor like a unique key in a lock. This action by the THC molecule indicates that it is a chemical in the class of neurotransmitters even though it is made by a plant without a nervous system (naturally). The conclusion that you may draw from this fact and from the fact that all animal life on earth came from one little creature called a Comb Jelly is that the only place the Comb Jelly could have come from was the plant kingdom because plants came first and then animal life came because it could be sustained by eating the plants. What this means is that the cannabinoid receptor evolved in the Sea Squirt in parallel with the evolution of the Cannabis plant. The proof of this co-evolution of man and Cannabis is in the unusual and unique similarities between Cannabis and Man. Both species have unique male and female separation - Male and female plants - male and female humans. Both species have unique DNA for each individual in the species. Both species produce the exact set <b>...</b>