Medical professionals are concerned with the
increase in the number of bacterial species that
are resistant to antibiotics. once resistance
appears in a bacterial population, it spreads
rapidly. this is most likely because
(1) populations of resistant bacteria are small
(2) exposure to antibiotics increases the rate of
reproduction in bacteria
(3) resistant bacteria are small when compared
to non-resistant bacteria.
(4) resistant bacteria survive in greater numbers
and pass the trait to their offspring