Transcriptomes refer to the complete set of RNA transcripts produced by the genome of an organism under specific conditions or in a specific cell type. The study of transcriptomes involves identifying and analyzing all the transcripts present in a cell or tissue at a given time, providing insights into gene expression, RNA splicing, and regulatory mechanisms. Transcriptome analysis can help researchers understand how genes are regulated, identify potential disease biomarkers, and uncover new drug targets. This research area is essential for advancing our understanding of gene expression and its role in various biological processes.