Multiple Choice
In the DNA double helix, what chemical components make up the “sides” (backbone) of the molecule?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In the context of DNA structure, which two scientists are most commonly credited with establishing the double-helix model of DNA in 1953?
A
Gregor Mendel and Thomas Hunt Morgan
B
Oswald Avery and Erwin Chargaff
C
James Watson and Francis Crick
D
Rosalind Franklin and Alfred Hershey
Verified step by step guidance1
Understand that the question is about the historical discovery of the DNA double-helix structure, which is a fundamental concept in genetics.
Recall that the double-helix model of DNA was proposed in 1953, marking a major milestone in molecular biology.
Identify the key scientists involved in this discovery: James Watson and Francis Crick are most famously credited with establishing the double-helix model.
Note that while other scientists like Rosalind Franklin contributed critical X-ray diffraction data, the formal model is attributed to Watson and Crick.
Therefore, the correct answer is James Watson and Francis Crick, as they published the double-helix structure of DNA in 1953.
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