Chromatin
is composed of a DNA and a protein. The DNA is a double helix in the cell
nucleus packaged by histones, a special type of protein. Together they form the
chromatin with a basic structural unit called nucleosome. The chromatin's functions are:
a. to
package DNA into smaller volumes to fit in the cell.
allow mitosis by reinforcing the DNA macromolecule
prevent damaging of the DNA
d.to
control gene expression and DNA replication
