Q. Concerning the nitrogen- containing bases that participate in nucleotides, what is the difference between RNA and DNA?
In DNA nucleotides can be formed of thymine (T), adenine (A), cytosine (C) or guanine (G). In RNA nucleotides can also contain cytosine (C) adenine (A), or guanine (G), however, instead of thymine (T) there is uracil (U).