The bases of a DNA molecule are the building blocks of the genetic code. There are four main bases:

* Adenine (A)

* Guanine (G)

* Cytosine (C)

* Thymine (T)

These bases pair up in a specific way:

* Adenine (A) always pairs with Thymine (T)

* Guanine (G) always pairs with Cytosine (C)

This pairing is called complementary base pairing and is crucial for DNA replication and protein synthesis.

Here's a simple way to remember them:

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