28 find that the cell spends in prophase (number of cells in prophase divided by the total # of cells (36) multiplied by 100)
I think the answer would be atoms, but i may be wrong. although that seems like the most logical answer.
Answer:
The correct answer is B. DNA replication is semiconservative.
Explanation:
With this experiment, Messelson and Stahl determined that there was a pattern in replication that left one original strand and added a new one in each case. Therefore, after two rounds, there will be two copies with "original" information exclusively and two copies with mixed strands or hybrids.