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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

Correct answer: Adenine and thymine; guanine and cytosine

Solution

In DNA, adenine pairs with thymine through two hydrogen bonds, and guanine pairs with cytosine through three hydrogen bonds, following the base-pairing rules.

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