In DNA, the complimentary bases are

In DNA, the complimentary bases are
  1. Adenine and thymine; guanine and cytosine
  2. Adenine and thymine; guanine and uracil
  3. Adenine and guanine, thymine and cytosine
  4. Uracil and adenine; cytosine and guanine

Solution

Deoxyribonucleic acid (DNA) has the purine bases adenine and guanine and pyrimidine bases thymine and uracil According to base pairing rule adenine paired with thymine $(A=T)$ and cytosine paired with guanine $(\mathrm{C} \equiv \mathrm{G})$.

Asked in: NEET 2008 (Screening)

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