The whole story of molecular biology has been discovering layers of control and information: DNA, genes, gene regulation, RNA, RNA splicing, protein structure a

The whole story of molecular biology has been discovering layers of control and information: DNA, genes, gene regulation, RNA, RNA splicing, protein structure and regulation, protein interactions, micro-RNAs... and it's usually been limited by the tools that scientists could bring to bear. Possibly there's another control layer in charge of the long range structure of the chromosome. Being wet, squishy and fragile, it's hard to study.