Urea is commonly used in laboratories. what will be the effect of adding a concentrated urea solution to a protein?
a. denaturation of protein
b. no effect
c. change in the sequence of amino acids

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).