Experimental evidence supporting the semiconservative nature of DNA replication came from which of the following?
A.The structure of DNA determined by Watson and Crick
B. centrifugation of DNA purified from E coll grown in a radioactive medium
C.incubation of purified DNA with radioactive nucleotides and DNA polymerase
D.observation of replication forks with an electron microscope
E.visual observation of cell division in E
