Eukaryotic DNA

• What do eukaryotic cells contain?

  Linear DNA molecules that exist as chromosomes- thread-like structures each made up of one long DNA molecule
• Where are chromosomes found?

  In the nucleus
• What is the DNA molecule like?

  Very long, so it must be wound up so it can fit into the nucleus
• What is the DNA molecule wound around?

  Proteins called histones
• What do histone proteins also help to do?

  Support the DNA
• How is DNA stored|?

  • DNA wound around histone proteins
  • DNA and protein is then coiled up tightly to make a compact chromosome
• What also have their DNA?


  The mitochondria and chloroplasts in eukaryotic cells also have their own DNA
• The mitochondria and chloroplasts in eukaryotic cells also have their own DNA - what is this DNA LIKE?


  Similar to prokaryotic DNA because it is circular and shorter than DNA molecules in the nucleus. It is NOT associated with histone proteins