Bacteria do not have well developed nucleus as Eukaryotic cells.
It has thin, circular coiled structure of a DNA molecule called
nucleotide or bacterial chromosome. The nucleoid do not have
nuclear membrane. The bacteria DNA is 2 to 3% of cell weight
but covers 10 or more % of volume of cell.
In some bacteria the DNA is attach to the
mesosome where as in some it is also attached to the cell
membrane. Bacterial DNA do not have histone protein and
does not coil to form well defined chromosome during
multiplication.The bacteria DNA form chromosome because
it lacks RNA
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