In  eukaryotes, DNA is complexed with histone proteins forming "beads"
   called nucleosomes, which appear as 10-nm chromatin during interphase.
   A  nucleosome  has 8 histone molecules. A different proteins, H1, acts
   as a spacer between nucleosomes.
   continue
   Review:  <A ClAsS=ACT Href="http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/activities/load.html?19&amp;A" oNClick="popact('http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/activities/load.html?19&amp;A');txtcolor('nucleosome2','gray');return false;" Id=nucleosome2><iMg sRc="/images/tutorial.gif" aLt='' boRDer=0></A>