Why did the scientists use 15NH4Cl and 14NH4Cl  as sources of nitrogen in the culture medium for growing E.coli ?

Dear Student,

The Scientists use 15NH4Cl and 14NH4Cl  as sources of nitrogen in the culture medium for growing E.coli due to the following 2 reasons:
  • As Nitrogen gets easily incorporated inside the newly formed DNA.
  • It is the main component of DNA.
Hope this information clears your doubts about the topic.

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