Which organism was used as experimental mater | vedclass

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(A) The experimental evidence for the semi-conservative nature of $DNA$ replication was provided by $Matthew$ $Meselson$ and $Franklin$ $Stahl$ in $19

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$Escherichia$ $coli$

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(A) The experimental evidence for the semi-conservative nature of $DNA$ replication was provided by $Matthew$ $Meselson$ and $Franklin$ $Stahl$ in $1958$.They grew $Escherichia$ $coli$ ($E.$ $coli$) in a medium containing $^{15}N$ (a heavy isotope of nitrogen) as the only nitrogen source for many generations.This resulted in the incorporation of $^{15}N$ into the newly synthesized $DNA$ (as well as other nitrogen-containing compounds).This heavy $DNA$ molecule could be distinguished from the normal $DNA$ by centrifugation in a $Cesium$ $Chloride$ $(CsCl)$ density gradient.

Which organism was used as experimental material to study $DNA$ replication?

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