Key Figures in DNA Double Helix Discovery and Their Contributions
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Who discovered the double helix structure of DNA?
James Watson and Francis Crick
What significant contribution did Rosalind Franklin make to the discovery of DNA?
Her X-ray crystallography image known as photograph 51 led to the understanding that DNA is a double-stranded helix.
What mistake did Linus Pauling make in his model of DNA?
He incorrectly proposed that DNA was triple-stranded.
What did Erwin Chargaff discover about the base pairing in DNA?
He found that in DNA, the amount of Adenine always equals the amount of Thymine, and the amount of Guanine always equals the amount of Cytosine.
What is the significance of photograph 51 in DNA research?
It provided crucial evidence that DNA has a double helix structure.
What role did X-ray crystallography play in understanding DNA?
It allowed scientists to visualize the structure of DNA, leading to the discovery of its double helix form.
What was the main focus of Linus Pauling's research on DNA?
He aimed to build an accurate model of the DNA molecule.