DNA, and many other biological polymers are structure as well as storage, some of these regions are about structure and modification of structure, to facilitate

DNA, and many other biological polymers are structure as well as storage, some of these regions are about structure and modification of structure, to facilitate modality of function. they act as recognition sites, consensus sequences, torsion limiters, process interference selectors, user defined variables. picture if you will, a big mass of magtape, no spool just a disaster, and you have to scan accross this mess until you find an accessible loop of it with a particular flag or type readable- likehow magtape works, except you have the mechanical challange of reading the tape in the form of a quivering, dynamic mass of spaggetti being read at mutiple locations and having to remain undamaged. some of these regions make the biggest contribution by simply allowing mechanical slack and positioning of contact sites.