What is the expression of a gene?

Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product that enables it to produce protein as the end product. ... The genetic information stored in DNA represents the genotype, whereas the phenotype results from the "interpretation" of that information.

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volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).