Which nitrogenous base is absent in DNA? (A) Thymine (B) Uracil (C)

1.	Which nitrogenous base is absent in DNA? (A) Thymine (B) Uracil (C) Guanine (D) Cytosine
Answer» Correct Answer is: (B) Uracil Uracil is also a pyrimidines base, but it is only found in RNA, not DNA. It is very similar to thymine expect it does not have the methyl group, so it acts differently from thymine.

Which nitrogenous base is absent in DNA? (A) Thymine (B) Uracil (C) Guanine (D) Cytosine

Answer»

Correct Answer is: (B) Uracil

Uracil is also a pyrimidines base, but it is only found in RNA, not DNA. It is very similar to thymine expect it does not have the methyl group, so it acts differently from thymine.

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Which nitrogenous base is absent in DNA? (A) Thymine (B) Uracil (C) Guanine (D) Cytosine

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