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In DNA, when AGCT occurs, their association is as per which of the following pairs?

1. AG-CT
2. AC-GT
3. AT-GC
4. All of these

Correct answer: AT-GC

Solution

In DNA, adenine pairs with thymine and guanine pairs with cytosine. So the sequence AGCT associates as A-T and G-C, giving AT-GC.

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