Question

dna and rna share a number of similarities, but they also differ in certain aspects of their structure. which nitrogenous base is found in rna but is not found in dna? adenine uracil

Explanation:

DNA contains nitrogen - containing bases adenine (A), thymine (T), guanine (G), and cytosine (C). RNA contains adenine (A), uracil (U), guanine (G), and cytosine (C). Uracil replaces thymine in RNA.

Answer:

uracil