Were you able to observe the nucleolus in any of the cells? if so, which ones?
use complete sentences.

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

not sure if this is what you'r looking for eubacteria and archaebacteria