Biology

The correct answer is B. Both DNA and RNA contain phosphate groups.

DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are nucleic acids that play essential roles in storing and transmitting genetic information in living organisms. While they have some similarities, they also have distinct differences.

Option A, stating that both DNA and RNA contain uracil, is incorrect. Uracil is found in RNA but not in DNA. DNA contains thymine (T) instead of uracil (U).

Option C, stating that both DNA and RNA contain ribose molecules, is also incorrect. DNA contains deoxyribose, while RNA contains ribose. The difference between the two sugars is the presence...