Purines which are found mainly in both deoxyribonucleotides and ribonucleotides are
A)thymine and cytosine.
B)thymine,cytosine and uracil.
C)adenine and thymine.
D)guanine and cytosine.
E)adenine and guanine.

Question

Quizplus · Accepted Answer

Purines are nitrogenous bases that consist of a double-ring structure. Adenine and guanine are examples of purines, and they are found in both deoxyribonucleotides and ribonucleotides. Thymine and cytosine are examples of pyrimidines, and uracil is a pyrimidine that is found only in RNA. Therefore, choice A, B, C, and D are incorrect. The best choice is E because it correctly identifies the two purines that are found in both types of nucleotides.

Purines Which Are Found Mainly in Both Deoxyribonucleotides and Ribonucleotides