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.
Toys were shaped like flowers, swords, axes and crescents, and also offered some special identification if the child got lost. Shows and entertainment in Ancient Rome Shows were one of the most important and characteristic features of Roman life, which occupied, on a schedule on the IV century, 176 days a year.