TLS Online TPP Program

#Question id: 2800


When chromatin is extracted from nuclei and viewed in the electron microscope, its form depends upon the salt concentration to which it is exposed. What is the form of chromatin when it is isolated in isotonic buffers, i.e. same salt concentration as in cells (about 0.15 M KCl)?

#Unit 2. Cellular Organization
  1. Beads-on-a-string form   

  2. 30 nm condensed fibers

  3. Loop structure      

  4. Condensed metaphase chromatin