( 1) Most microbes are haploid, thus mutations cannot be masked by allelic gene.
(2) They are unicellular, so many mutated cells tan give rise to a new evolutionary line.
(3) Microbes can occur in high densities in restricted environments, where a mutant may have a selective advantage.
(4) Microbes grow very rapidly.
(5) Plasmid transfer is common, thus new traits do not have to be acquired byall organisms by a long process of mutation and evolution. Due to above said characteristics, microbes, particularly prokaryotes, are able to adapt themselves to a wide variety of extreme environments
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