Final answer:
The idea that eukaryotic chromosomes replicate semiconservatively was supported by experiments using 3H-thymidine labeled DNA from cultured cells incubated with ³H-thymine.
Step-by-step explanation:
The idea that eukaryotic chromosomes replicate semiconservatively was supported by Taylor et al, in experiments using 3H-thymidine labeled DNA from cultured cells incubated with ³H-thymine. In their experiment, cells were exposed to radioactive thymine which eventually incorporated into DNA. The resulting DNA molecules have the same sequence and are divided equally into the two daughter cells.