iGenetics 3rd Edition by Peter Russell

Exercise 4

The elegant Meselson-Stahl experiment was among the first experiments to contribute to what is now a highly detailed understanding of DNA replication. Consider this experiment again in light of current molecular models by answering the following questions:
a. Does the fact that DNA replication is semiconservative mean that it must be semidiscontinuous?
b. Does the fact that DNA replication is semidiscontinuous ensure that it is also semiconservative?
c. Do any properties of known DNA polymerases ensure that DNA is synthesized semiconservatively?