MCQ
In Meselson and Stahl's experiments, heavy $DNA$ was distinguished from normal $DNA$ by centrifugation in
  • A
    $CsOH \;gradient$
  • B
    $14 \mathrm{NH} 4 \mathrm{Cl}$
  • C
    $15 \mathrm{NH} 4 \mathrm{Cl}$
  • $CsCl\; gradient$

Answer

Correct option: D.
$CsCl\; gradient$
d
In Meselson and Stahl's experiments, heavy $DNA$ was distinguished from normal $DNA$ by centrifugation in $CsCl$ gradient. When $DNA$ is mixed with caesium chloride it will settle down at a particular height in centrifugation and heavier one higher up.

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