Meselson and Stahl's Experiment Followed

Meselson and Stahl's experiment followed

A) the distribution of different-weighted DNA over three generations of bacteria.
B) the distribution of different-labeled DNA over three generations of humans.
C) the ability of a protease or nuclease to stop the transmission of DNA over generations.
D) viruses injecting their DNA into bacteria.
E) DNA sequences in people who are politically liberal compared to those who are sometimes politically conservative.