Virtually every cell contains genetic material in the form of DNA. This genetic material controls how an organism develops and functions.

It is important that you understand by the end of this unit…

  • How DNA is stored differently in prokaryotic and eukaryotic cells.
  • What the genome is.
  • How DNA is structured.
  • What chromosomes, genes and alleles are.
  • How proteins are made from the coding on the genes.
  • (What causes mutations.)
  • How to use a microscope to observe plant and animal cells.

DNA

Image from Wikimedia Commons

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B1   Should I revise this?