Biology 1013 Launchpad Milestone 2 Quiz

Rosalind Franklin used x-ray diffraction to record how x-rays scatter when bounced off the surface of DNA molecules. Which of the following conclusions about the structure of DNA did her images support?

All of the answers are correct.

Chargaff discovered that the A-T bond has the same width as the G-C bond. What implication does this have for the structure of the DNA molecule?

It means that the molecule will vary in width as you move down its length, depending on the number of A-T and G-C nucleotides.

Which of the following scientists is incorrectly paired with their contribution to the discovery of the structure of DNA?

Watson and Crick; x-ray diffraction images of DNA helix

Rosalind Franklin did not receive the credit she deserves for her contribution to the discovery of the structure of DNA because _____.

All of the answers are correct.

Which of the following pieces of critical information did Watson and Crick use to build and propose their model of the structure of DNA?

All of the answers are correct.