The nitrogenous bases in DNA are adenine, guanine, thymine, and cytosine. The nitrogenous bases in RNA are adenine, guanine, uracil, and cytosine. So the base in RNA that is different than in DNA is uracil.
B.) The amounts of A, T, G and C in DNA varies from species to species and C.)In any ome species, the amount of adenine closely approximates that of thymineD.) In any one species, the amount of guanine closely approximates that of cytosine
