Question

which of the following nitrogen base is not present in dna.
A) uracil B) adenine C) thymine D) guanine

Answer 1

Question: Which of the following nitrogen base is not present in dna.

A) uracil B) adenine C) thymine D) guanine

Explanation:

The nitrogenous bases present in DNA are purine (adenine or guanine) and pyrimidine (cytosine or thymine). Uracil is absent from DNA. Uracil is present as pyrimidine base in ribonucleotides which are components of RNA. So, the correct answer is option D

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Answer 2

Answer:

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Explanation:

✏Uracil isn't a nitrogen base,whereas adenine,thymine, guanine and cytosine are the four nitrogenous bases.

✒Hope it helps☺❤✌