The structural support to the chromosomes is provided with the histones. Histones proteins lends structural support to the chromosome and helps activate or silence gene expression.
What is a chromosome ?
It is the genetic unit which is passed on via inheritance.
Histones are changed by the addition or removing chemical groups, such as methyl groups or acetyl groups (consisting of two carbon, three hydrogen, and one oxygen atoms).
Each of the Chromosome is containing a long piece of DNA that fits into the cell nucleus. DNA wraps around the histones complexes of histone proteins.
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