In Meselson and Stahl’s experiment (1958), DNA extracted fr…

Biology Molecular Basis of Inheritance Single Correct MCQ

Published on: August 20, 2026

In Meselson and Stahl’s experiment (1958), DNA extracted from the culture one generation after the transfer from 15N to 14N medium had a hybrid (or intermediate) density. Why?

Because the generation time of E. coli (culture) was about 20 minutes

Because it would take 20 minutes for RNA replication

Because it would take 20 minutes for replication of DNA to RNA (transcription)

Because it would take 20 minutes for translation RNA to protein

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