DNA (deoxyribonucleic acid) is transcribed into mRNA (messenger ribonucleic acid) during the process of transcription. In this process, the DNA sequence is used as a template to synthesize a complementary mRNA sequence.
The rules for converting DNA to mRNA are:
Consider a DNA sequence "ATCG":
Using the conversion rules:
\[ \text{mRNA Sequence} = \text{UAGC} \]
This means the mRNA sequence is UAGC.