Perhaps, the presently existing micro-organisms are very much adapted to being single-celled that they just won't change too much in a human's life span.
Perhaps, they have been more or less the same for sooo many millions of years that they just don't mutate into some other species, within the span of a scientific experiment.
Maybe that experiment didn't provide the required environmental changes for that population to evolve... perhaps because it is already evolved to match most environments present on Earth?...
Try something more malleable, like the fruit fly!
Perhaps, they have been more or less the same for sooo many millions of years that they just don't mutate into some other species, within the span of a scientific experiment.
Maybe that experiment didn't provide the required environmental changes for that population to evolve... perhaps because it is already evolved to match most environments present on Earth?...
Try something more malleable, like the fruit fly!
