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Natural Science - Year II

Unit 60: Crick, Watson, and DNA

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History Weblecture for Unit 60

This Unit's Homework Page History Lecture Science Lecture Lab Parents' Notes

History Lecture for Unit 60: Unravelling the Structure of DNA

For Class


Reading Notes

The Discovery of DNA

The story of the discovery of DNA is one of the great tales of the human scientific endeavor. For a century, many people experimented, published, and debated the original and structure of the chemicals which control inheritance of particular characteristics and the functions of the cell.

We are going to use a couple of websites; the first is a high school biology class timeline, and the second is a short history of biology section for a junior college course. Be sure to study the diagrams and pictures in the second.

Biochemistry Timeline

DNA History of Discovery

  • Identify the discovery of each of the following people, and be able to show how it contributed to the eventual understanding of the function and structure of DNA:
  • 1860s: Friedrich Meischer
  • 1908: Archibald Garrod
  • 1928: Frederick Griffith
  • 1940s: Beadle and Tatum
  • 1944: Avery, MacLeod, McCarty
  • 1952: Hershey and Chase
  • 1953: Rosalind Franklin and MHF Wilkins
  • 1953: Francis Crick and James Watson

Study/Discussion Questions:

Further Study/On Your Own