NEET Biology question

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

(A)Because the generation time of the E. coli culture was about 20 minutesCorrect
(B)Because it would take 20 minutes for RNA replication
(C)Because it would take 20 minutes for replication of DNA to RNA (transcription)
(D)Because it would take 20 minutes for translation of RNA to protein

Answer: (A)

Solution

Since E. coli has a generation time of about 20 minutes, one round of semiconservative replication

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Question ID VK-120840