Which of the following nitrogenous bases is not found in DNA?

Step 1: Define the Problem

Identify which nitrogenous base is not present in DNA.

Step 2: Break Down the Problem

List the nitrogenous bases found in DNA and identify the one that is not included.

Step 3: Apply Relevant Concepts

DNA contains four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). RNA, on the other hand, contains uracil (U) instead of thymine.

Step 4: Analysis, Verify and Summarize

Compare the list of DNA bases with the options provided in the question to identify the base not found in DNA.

Final Answer

Uracil (U) is the nitrogenous base not found in DNA.