The core of the histones H2A and H2B can also be modified. Combinations of modifications are thought to constitute a code, the so-called histone code. Histone modifications act in diverse biological processes such as gene regulation, DNA repair, chromosome condensation (mitosis) and spermatogenesis (meiosis).
Bread and Circuses. Bread and circuses became the method that the ruling class of ancient Rome used to maintain their power and control of the people. This method kept their sheep fat and happy, even as they fleeced them and sent them off to plunder the free world.
Bread was a staple part of the Roman diet. Three grades of bread were made, and only rich ate refined white bread. Pottage, a thick porridge-like stew, was made from millet or wheat. To this the Romans would add cooked meats, sauces and spices.