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Can a bacteria pass on its "resistant" gene to another specie?


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Resistance gets passed across species all the time by various methods. However, it works best in vaguely similar species, as otherwise the genes might be passed on but ineffective due to structural differences. There's conjugation (bacteria sex, notoriously promiscuous across species), transformation (bacteria assimilating loose DNA), and transduction (transfer via virus). Of course the bacteria might develop a resistance of its own accord as well.

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these are all true. but the ecoli could catch out the unwary and make the e fecium appear resistant as the blactamase diffuse into the media. one to watch out for if you are training it is a great way to teach people to not trust their eyes but rely on their knowledge and not over complicate things

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