Question

1. in 1962, three scientists who contributed to the discovery of the structure of the dna molecule were awarded the nobel prize in physiology and medicine. the fourth scientist who contributed to this discovery, rosalind franklin, was not awarded the prize, as she had died before this honor could be bestowed. what was her major contribution to this discovery?

a. she determined that dna was a crystal.
b. she captured the x - ray crystallography image that led to the discovery.
c. she determined that nitrogenous bases occurred in pairs.
d. she determined that dna was a double helix.

1. paragraph 5 discusses the importance of the discovery of the structure of the dna molecule. what did this discovery allow scientists to confirm?

a. specific base pairing allowed dna to duplicate itself.
b. if chargaffs rule were followed, then the bonds between bases were equal.
c. specific base pairing allowed for the transfer of genetic information.
d. all of the above

Explanation:

Rosalind Franklin's famous Photo 51, an X - ray crystallography image, was crucial for the discovery of DNA's structure. The discovery of DNA's double - helix structure confirmed that specific base pairing allowed DNA to duplicate itself (A), was related to Chargaff's rule about equal base - bonds (B), and enabled the transfer of genetic information (C).

Answer:

1. B. She captured the X - ray crystallography image that led to the discovery.
2. D. All of the above