2 ms·
> Telomeres shorten because we have linear chromosomes and it is physically impossible to replicate them without losing a bit off the ends If that were true th
by seanwilson 11y ago
> Telomeres shorten because we have linear chromosomes and it is physically impossible to replicate them without losing a bit off the ends
If that were true though wouldn't successive newborns have shorter and shorter telomeres?
- astazangasta 11y agoNo, there is a specialized enzyme called telomerase which is responsible for lengthening telomeres. It is active in germline cells and most stem cells, allowing those cells to safely and indefinitely replicate. The enzyme is basically a piece of RNA template that you can slap onto the ragged end of the chromosome and hold in place to allow extension.