Histones play a role in packaging DNA into nucleosomes, and they are the main protein in chromatin. In addition, gene expression can be regulated by histones. Genes that are silenced are bound very tightly to a lot of histones, while those that are active are not. Modifications to histones are referred to as the histone code.
Definition of bolshevism. 1 : the doctrine or program of the Bolsheviks advocating violent overthrow of capitalism.
The history of Bolero. Bolero is an American Style Dance, which was introduced to United States in the mid-1930's. At that time, it was danced in its classical form, which was performed, to a constant beat of drums. Originally a Spanish dance in 3/4 time, it was changed in Cuba initially into 2/4 time then eventually into 4/4. It is now danced as a very slow type of Rumba rhythm. The music is frequently arranged with Spanish vocals and a subtle percussion effect, played at a tempo of 20 to 25 mpm (measures per minute).