The human genome codes for 20,000 to 25,000 proteins,but any given cell might produce only 5,000 different proteins.How is this possible?

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The regulation of gene expression ensures that not all genes are transcribed in all cells. Different types of cells have different functions and therefore require different proteins to do their job. Only the genes necessary for a particular cell function are activated, while the rest remain silent. This is how a single genome can produce different types of cells with varied functions, and yet any given cell might not produce all 20,000 to 25,000 possible proteins.

The Human Genome Codes for 20,000 to 25,000 Proteins,but Any