If we take the root of the word genu from genuine or lineage, understand that the prefix in - inward or inner, is added to denote concexión with our lineage, the true. This is our inheritance, the dignity of being human.: made in the image and likeness of the creator. And if her link with another word that comes from this root: gene, see this is programmed in our genetic codes (Med. quantum, conduct according to the codes and laws of the cosmos, it is the essence of the human being.