3. which of the following statements regarding dna is false?
a. dna uses the nitrogenous base uracil.
b. dna is a nucleic acid.
c. one dna molecule can include four different nucleotides in its structure.
d. dna uses the nitrogenous base thymine.
e. dna molecules have a sugar-phosphate backbone.

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

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