The significance of the deoxyribonucleic acid (DNS) as a carrier of information is undisputed, but overrated. It is not the headquarter which issues its strict orders but an organ of linkage, which connects and links the actions of organelles and proteins. The pieces of its information are therefore dependent on other pieces of information; it controls and is controlled so to speak... This is a new point of view that reopens doors in genetics which had been slammed shut before. If the DNS or the chromosome were a rigid machine, a kind of programmed computer, many processes of evolution could not be explained!  That they are explainable, that we are able to understand apparently mysterious processes in the cell, like mitosis and reduplication, is what we will find out in the chapter CHROMOSOME!