Page 1 of 11
Meselson and Stahl grew bacteria in a growth medium containing ammonium ions (14NH4). N is the common, light form (isotope) of nitrogen. The heavier form (15NH4) has an additional neutron in the nucleus. The source of nitrogen for new DNA produced during cell division was the 14NH4 in the ammonium ions.
Get FREE access to this and 1000s more
No comments have yet been madeSign in to comment