Chromosome Structure and DNA Organization in Eukaryotes and Prokaryotes

DNA Organization in Chromosomes: DNA to Chromatin to Chromosomes

Viral and Bacterial Chromosomes: Much simpler than those of eukaryotes, single DNA molecule.

Prokaryotic Chromosomes: No associated proteins, less genetic information.

Virus Chromosome: Single or double-stranded DNA, can be a covalently closed circle (X174 & Polyoma), can be linear (T-even 2x).

  • Bacteriophage λ is a linear double-stranded DNA molecule before infection, closes into a ring after infection of the host. Long DNA molecule
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