Rna sequencing is a high-throughput molecular biology methodology employed to determine the nucleotide sequences of RNA molecules present in a biological sample. This technique enables comprehensive analysis of the transcriptome, providing quantitative data on gene expression levels, identifying RNA variants such as splice isoforms and fusion transcripts, and characterizing the full repertoire of coding and non-coding RNA species within a cell or tissue at a given time point. Its significance lies in its capacity to provide profound insights into cellular state, regulatory networks, and the molecular basis of biological processes, development, and disease.