Gene expression pattern refers to the variation in the activity of genes across different tissues, developmental stages, and environmental conditions. It is a crucial aspect of understanding how genes contribute to the phenotype of an organism. Synonyms for gene expression pattern include gene activity profiling, gene expression analysis, transcriptome analysis, and gene expression signature. These terms emphasize the importance of measuring the level of gene expression in different contexts, and how it can be used to identify biomarkers, disease mechanisms, and potential targets for therapeutic interventions. By studying gene expression patterns, scientists can gain insights into the complex regulation of gene expression and the functional consequences of genetic variation.