Which of the following best captures the concept of complementary base pairing in replication?

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Multiple Choice

Which of the following best captures the concept of complementary base pairing in replication?

Explanation:
Complementary base pairing in DNA replication means each base on the template strand directs the addition of a specific partner on the new strand: adenine pairs with thymine, and guanine pairs with cytosine. This pairing, driven by hydrogen bonding and proper shape, lets the two strands be copied accurately when the double helix unwinds and DNA polymerase adds new nucleotides opposite their complements. In DNA replication, thymine is used (not uracil), so the pattern A–T and G–C is the correct pairing. The other options mix incorrect pairings or refer to RNA pairing (A with U) rather than DNA replication.

Complementary base pairing in DNA replication means each base on the template strand directs the addition of a specific partner on the new strand: adenine pairs with thymine, and guanine pairs with cytosine. This pairing, driven by hydrogen bonding and proper shape, lets the two strands be copied accurately when the double helix unwinds and DNA polymerase adds new nucleotides opposite their complements. In DNA replication, thymine is used (not uracil), so the pattern A–T and G–C is the correct pairing. The other options mix incorrect pairings or refer to RNA pairing (A with U) rather than DNA replication.

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