Do unicellular organisms age?

Fissure fissure at
Fri Jun 2 10:04:02 EST 1995

>I believe a distinction must be made between the immortality of bacterial
>colonies and cell lines and the immortality of the _individual_ organism.
>Colonies may appear immortal and appear to have a single genotype, but the
>actual, single bacterium (if it could be isolated) might be found to die after a
>limited number of divisions.
>In yeast, careful separation of mother and daughter cells has shown that the
>mother cell stops dividing after budding and eventually dies.
>Arnold Seto
>seto at

do you know if any research was done into the telomere length of the mother
cell and "her" lifespan? do the telomeres of the mother cell get cut off
during reproduction as in mammalian cell?

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