6
lesson pretestMultiple Choice

Pretest

Question 6 • CMS 2026-2027 Biology CREDIT RECOVERY

Rosalind Franklin is famous for which contribution to the study of DNA?

Answer
A
creation of an accurate model of DNA structure
B
identification of DNA in bandages that contained pus
C
creation of an X-ray diffraction image of DNA structure
D
identification of a pattern in ratios of DNA bases

Explanation

Rosalind Franklin used X-ray diffraction to study DNA and produced images that revealed important clues about its structure, including its helical shape. Choice B, creation of an X-ray diffraction image of DNA structure, describes her contribution. Watson and Crick later used this evidence, along with other findings, to build a model of DNA.

AI-written and checked against the verified answer.

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