9
lesson pretestMultiple Choice

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Question 9 • CMS 2026-2027 Biology CREDIT RECOVERY

Who is credited with creating the first accurate model of DNA?

Answer
A
Friedrich Miescher
B
James Watson and Francis Crick
C
Marshall Nirenberg and Heinrich Matthaei
D
Rosalind Franklin

Explanation

James Watson and Francis Crick are credited with proposing the first accurate model of DNA’s structure: the double helix. Rosalind Franklin’s X-ray diffraction research provided crucial evidence that helped reveal the structure, but Watson and Crick created the model.

AI-written and checked against the verified answer.

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