(February 12, 2011 at 11:45 am)KichigaiNeko Wrote: A question chuck...
How do we explain MRSA? and say Anti-biotic resistant Klebsiella sp? Or any other species of Bacteria.
Bacteria in a isolated community can show evolution if selection pressure kills every member not in temporary possession of a certain advantageous gene. Soon prevalence of the advantageous gene would be so high that every member will have a high chance of possessing one or more copies however they exchange genes. But this is not the same as Darwinian evolution. Darwinian evolution does not require genetic isolation to function. Lineages with in an broad community can evolve. Bacteria, on the other hand, can't show distinct genetic lineages with a community. So either the community evolves, or no evolution.
