Final answer:
Thymine in DNA always pairs with Adenine in a complementary base pairing.
Explanation:
Thymine always pairs with Adenine in DNA. This base pairing is a fundamental aspect of DNA structure known as complementary base pairing. Adenine and Thymine form two hydrogen bonds with each other, while Cytosine and Guanine form three hydrogen bonds in the DNA double helix.
Learn more about DNA base pairing here:
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