| Direction: Read the following and answer the questions from given below |
| The Meselson and Stahl experiment was an experiment to prove that DNA replication was semiconservative and it was first shown in Escherichia coli and subsequently in higher organisms, such as plants and human cells. Semiconservative replication means that when the double stranded DNA helix was replicated, each of the two double-stranded helices consisted of one strand coming from the parental helix and one is newly synthesised. |
| (ii) Heavy DNA can be differentiated from normal DNA by which centrifugation technique? |
A) AgCI density gradient
B) CsCI density gradient
C) \[CaS{{O}_{4}}\], density gradient
D) KCI density gradient
Correct Answer: B
Solution :
[b] Heavy DNA molecule could by distinguished from the normal DNA by centrifugation in a cesium chloride (CsCI) density gradient.
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