You are trying to redo the Meselson and Stahl experiment demonstrating semi-conservative replication but decided to start the cells in light Nitrogen (N14 in NH4Cl) and then switch to heavy nitrogen (N15 in NH4Cl). A) would you perform this experiment in rich media or minimal media and why B) Draw or describe the expected results of the experiment at the beginning of the experiment, after one replication, and after many chromosomal replications..