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Question
Which nitrogen base is absent in D. N.A ?
Which nitrogen base is absent in D. N.A ?
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Solution
The correct option is B uracil
In DNA, four bases have been found. They are adenine (A), guanine (G), cytosine (C) and thymine (T). The first three of these bases are found in RNA also but the fourth is uracil (U). RNA contains cytosine and uracil as pyrimidine[1] bases while DNA has cytosine and thymine.
So, the correct answer is 'Uracil'.
In DNA, four bases have been found. They are adenine (A), guanine (G), cytosine (C) and thymine (T). The first three of these bases are found in RNA also but the fourth is uracil (U). RNA contains cytosine and uracil as pyrimidine[1] bases while DNA has cytosine and thymine.
So, the correct answer is 'Uracil'.
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