Thats like what came first the chicken or the egg.. A religous issue we might not want to dive into...

Anyhow ill say this.. Obv the plant came from seed. Like the Diesel is from Bagseed and there were only a couple beans and they were killer plants that the origin was unknown therefore in theory can not be replicated in exact form. However if you did enough diggin and got back to the person what grew the pot ( this would be very hard ) you could in theory find the parent and if the parents are not dead could attempt to replicate the strain.. Make Sense.. ??