• Draw a nucleotide, label the parts
• What are the 4 nitrogenous bases?
• If this is half of the DNA strand, show me the other half
based on complementary base pairing.
•ATTCGGCATTA
DO NOW
The Race to the
Double Helix
The story of Rosalind Franklin
• The duo that is credited with the discovery of the
double helix shape of DNA
• Won the Noble Prize in 1964.
• Showed their double helix discovery through models
of the DNA.
Watson and Crick
• Worked with X-Ray Crystallography.
• Technique that showed the structure of
molecules.
• Famous picture showed evidence of a
double helix.
• Worked with Maurice Wilkins
• (Not a big fan of Mr. Wilkins)
• Died of ovarian cancer due to radiation
poisoning from her X-Ray work
Rosalind Franklin
DNA?
Maurice Wilkins shared Franklin’s confidential data
(the pictures of DNA structure) with James Watson
and Francis Crick in 1951.
They “discovered” the double helix structure of
DNA in 1953
Later on….
Rosalind Franklin
received no credit for her
work
• 1. http://youtu.be/JiME-W58KpU :Rosalind Franklin
Great Minds
• 2. http://www.biography.com/people/james-d-watson9525139/videos/crick-and-watson-discovery-of-dna22127171939 Watson and Crick bio
• 3. http://youtu.be/35FwmiPE9tI : Franklin vs. Watson and
Crick
Videos
• Review these notes and videos and with one partner
try to write a summary of the story of the discovery of
the DNA Double Helix.