Packaging Eukaryotic DNA

How DNA is Packaged

• Histones
  • Proteins that provide the first level of packing.
  • Amount of histones is approximately equal to the amount of DNA in chromatin, by mass.
• Nucleosomes: combinations of histones and DNA

Figure 19.1, page 345, Campbell's Biology, 5th Edition

Eukaryotic DNA Overview
Click on “Tour”(bottom of page)->”Chromosome Close-up”(top of page)->”3D Animation, Chromosome Coiling” (left side of page)