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.
Pax Romana (Latin for  Roman Peace ) was the long period of relative peace and minimal expansion by the Roman military force experienced by the Roman Empire after the end of the Final War of the Roman Republic and before the beginning of the Crisis of the Third Century. Pax Soprana is the sixth episode of the HBO original series The Sopranos. 2  In Magi: The Labyrinth of Magic, Reim's Peace is the Reim Empire's version of Pax Romana, established about 200 years prior to the series by Empress Scherazade. 3  Reim is a nation based on the Roman Empire.