harry wrote
Steve Firth wrote
harry wrote
Andy Champ wrote
Steve Firth wrote
wrote
(Windmill) wrote

They say that antibiotic resistance can even be
spread from one type of bacterium to another.

It is a fact, not a 'they say'.

Perhaps you could explain the mechanism of this fact?

It's a fact. It's not even an obscure one, and
I'm surprised you haven't come across it.

http://en.wikipedia.org/wiki/Horizontal_gene_transfer

When you think, it must be so.
If bacteria multiply by division, how else could they change/evolve.?

Oh FFS. They could evolve without the ability to transfer
plasmids between cells. It would just be slower.

How, when the cell divides into two parts identical to the one that went
before?

Random mutation.