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Gene Expression refers to the process by which information from a gene is used in the synthesis of a functional gene product. These products are often proteins, but in non-protein coding genes, RNA molecules such as ribosomal and transfer RNAs are also produced. Gene expression is a fundamental aspect of genetics and is tightly regulated at various levels, including transcription, RNA processing, and translation. In the context of recombination, gene expression plays a crucial role in generating genetic diversity and driving evolution. It is through the regulation of gene expression that cells can respond to environmental changes and modulate their developmental programs. Within the field of science, gene expression serves as a key mechanism for understanding how genes influence biological processes and how alterations in gene expression can lead to disease.