How are DNA and mRNA related?

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If there has been a mutation in DNA, the mRNA will not change
mRNA is used a a template to make DNA
If there has been a mutation is mRNA, the DNA will not change
DNA is used as a template to make mRNA

DNA and mRNA are related as DNA is used as a template to make mRNA. This process is called transcription. DNA contains the genetic information in the form of genes, and a specific gene is transcribed into mRNA, which carries the instructions for protein synthesis. Therefore, the sequence of nucleotides in DNA determines the sequence of nucleotides in mRNA. In case of a mutation in DNA, the corresponding mRNA molecule produced will carry the mutated information. However, if there is a mutation in mRNA, it does not affect the DNA sequence.