Re: [DIYbio] Culturing antibiotic resistant bacteria on regular media?

Unfortunately the original reference link is dead, but this says at
incubator temperatures (37 C) ampicillin only lasts 3 days:
http://www.openwetware.org/wiki/Ampicillin#Stability

Just something I came across recently that was interesting to think
about. I sub-cultured some cells and put them in the fridge the next
day for storage, thinking I could get a few weeks of fridge storage
that way, before having to re-culture.

On Tue, Apr 4, 2017 at 9:12 AM, MC <markyching@gmail.com> wrote:
> I have a very basic question as a beginning bio student: What would happen
> if you sub-cultured something like E. coli with a ampicillin resistant
> plasmid that's currently growing on amp LB onto plain LB?
>
> My hypothesis based on my limited experience is that assuming no
> contamination, it will grow but so will E. coli lacking the amp resistance.
> But why? Do mutations occur in asexual reproduction for the sake of genetic
> diversity?
>
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--
-Nathan

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