The base-pairing rule describes how the nitrogen bases pair with one another.
For the base-pairing rule states that adenine always pairs with thymine and cytosine always pairs with guanine.
For transcription from DNA to mRNA the base-pairing rule states that adenine in DNA always pairs with uracil in mRNA and cytosine always pairs with guanine.
DNA REPLICATION
TRANSCRIPTION FROM DNA TO mRNA
