The jellyfish, Turritopsis dohrnii, is described as being immortal. If T. dohrnii is not eaten by predators or diseased, it seems to be able to live forever. There is no way to determine the biological age of a T. dohrnii individual.
Which feature of the cells in T. dohrnii could explain these observations?
1 )
very long G phases in the cell cycle
2 )
a very short S phase in the cell cycle
an ability to restore telomeres to their original length
4 )
fewer chromosomes than other eukaryotic organisms
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