Respuesta :

Answer:

Uracil is a nitrogenous base found in all RNA but not present in DNA.

Explanation:

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Answer:

Uracil

Explanation:

Uracil is a base found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine. Uracil the nitrogenous based is not found in DNA.

So, the final answer is Uracil.