Which nitrogen base can’t you use during replication

Nitrogenous bases are part of the backbone of the DNA/RNA structure themselves.

The nitrogenous base you cant use during replication is Uracil.

Uracil

Explanation:

DNA undergoes replication, by splitting it's double stranded parent DNA. Once splitted the enzyme DNA polymerase help to produce complimentary bases such as thymine, adenine, cytosine and guanine.

Thus, all except for uracil is used in replication.

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