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Biology

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Molecular Biology

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DNA Replication

DNA Base Pair Rules

Description

DNA base pairing follows specific rules that help DNA carry genetic information. In DNA, the bases pair in a regular way, with adenine matching thymine and cytosine matching guanine. These pairs fit together because of their chemical shapes and bonding patterns.

These base pairs also support accu...

Transcript

DNA resembles a twisted ladder. And the rungs of the DNA ladder are complementary pairs of nitrogenous bases. According to base pairing rules, adenine, a purine, pairs with thymine, a pyrimidine, with two hydrogen bonds. And guanine, a purine, appears with cytosine, a pyrimidine, with three hydrogen bonds. But why do purines always pair with pyr...

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