Researchers test a group of cells for DNA content immediately following mitosis and find the average to be 12 picograms of DNA per nucleus. Based on this information, how many pictograms of DNA would they expect to find at the end of the S phase and at the end of the G2 phase? 12 picograms at the end of S and 6 at the end of G2
12 picograms at the end of S and 12 at the end of G2
24 picograms at the end of S and 12 at the end of G2
24 picograms at the end of S and 24 at the end of G2