6
QuizMultiple Choice

Genetic Code — Quiz

Question 6 • Biology

Who first identified DNA?

Answer
A
Erwin Chargaff
B
James Watson
C
Rosalind Franklin
D
Friedrich Miescher

Explanation

Friedrich Miescher first isolated a substance from cell nuclei in 1869 and called it “nuclein.” It was later recognized as DNA. Rosalind Franklin, James Watson, and Erwin Chargaff made important contributions to understanding DNA, but Miescher identified it first.

AI-written and checked against the verified answer.

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