Science glossary film: Base (biology)

Base (biology)

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In the DNA double helix, the links between the two strands are formed by pairs of much smaller molecules called bases.

In the DNA double helix, the links between the two strands are formed by pairs of much smaller molecules called bases. There are four types of base in DNA: adenine, which always pairs with thymine, and cytosine which always pairs with guanine. It's the order of these bases - A,T, C and G - along the DNA molecule that forms the genetic code.

There are four types of base in DNA: adenine, which always pairs with thymine, and cytosine which always pairs with guanine. It's the order of these bases - A,T, C and G - along the DNA molecule that forms the genetic code.

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