Plant cells are grown in a medium of 3h-thymidine, a radioactive isotope of hydrogen, and allowed to replicate. when 3h-thymidine is incorporated into dna, the affected chromosomes emit radioactive decay that can be detected with photographic film. after the first round of replication in the 3h-thymidine medium, the plant cells are transferred to a medium of non-radioactive thymidine and allowed to replicate for many generations.

based on your understanding of the process of dna replication, provide an explanation for the pattern that would be expected in the produced dna after the second round of replication. explain how the process of dna replication will change the proportion of radioactive cells to non-radioactive cells in future generations.