Which set lists the four nitrogenous bases found in DNA?

• A. Adenine, thymine, cytosine, uracil
• B. Adenine, thymine, cytosine, guanine
• C. Thymine, uracil, cytosine, guanine
• D. Adenine, uracil, cytosine, guanine

Answer: (B)

Verified step by step guidance

1. Recall that DNA is composed of four nitrogenous bases which are categorized into two groups: purines and pyrimidines.
2. Identify the purines in DNA: adenine (A) and guanine (G).
3. Identify the pyrimidines in DNA: cytosine (C) and thymine (T).
4. Remember that uracil (U) is found in RNA, not DNA, so it should not be included in the list of DNA bases.
5. Combine the correct bases to list the four nitrogenous bases found in DNA: adenine, thymine, cytosine, and guanine.