When asking what direction is the template strand read, the answer lies in the 3' to 5' orientation of the DNA strand that serves as the template for RNA synthesis. On top of that, this directionality is a fundamental feature of molecular biology, influencing how genetic information is copied and expressed. In the following sections, we will explore the structural basis of DNA polarity, the role of the template strand, the mechanism by which RNA polymerase reads it, and why the 3'→5' direction is essential for accurate gene expression No workaround needed..
Short version: it depends. Long version — keep reading.
Understanding DNA Directionality
DNA is a double‑stranded molecule composed of two polynucleotide chains wound around each other in a helical structure. Each chain is built from nucleotides, and the orientation of these nucleotides is defined by the carbon numbering of the deoxyribose sugar. The 5' end carries a phosphate group attached to the fifth carbon, whereas the 3' end has a free hydroxyl group on the third carbon. Because the two strands run in opposite directions, they are described as anti‑parallel: one strand runs 5'→3', while its complement runs 3'→5'.
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