Nuclear material

NUCLEAR MATERIAL
  • Procaryotic cells do not have membrane enclosed nucleus. An area near the centre of the cell contains the DNA of the cell. It is considered as a nuclear structure.
  • This structure is called as nucleoid, chromatin body, nuclear equivalent or bacterial chromosome.
  • Nucleoid can be seen in light microscope by Feulgen staining which is specific for DNA. In electron microscope it is seen as a light area with delicate fibrillar structure.
  • The nuclear material is very long sometimes more than 1000 times the size of  the cell. So to accomodate this within the cell it is highly coiled.
Last modified: Tuesday, 20 December 2011, 1:45 PM