In terms of its involvement in mutagenesis, 5BU is best described as View Available Hint(s) O a rare form of adenine that can base pair with cytosine O a chemical that alters the structure of nitrogenqus bases O a base analog that, if incorporated into a DNA molecule during replication, remains permanently in ts rare form O a base analog that can cause either A-T > G.C or G.C A.T transitions