Scientist at work on human genome research

Credit: PETER MENZEL/SCIENCE PHOTO LIBRARY

Caption: Research on the human genome: Caltech scientist Leroy Hood preparing an electrophoresis gel used in a computer-controlled system for DNA sequencing of human chromosomes. DNA sequencing involves decoding the base-pair sequence of sections of DNA encode specific proteins. Sequencing and mapping - surveying each of the 23 pairs of human chromosomes to locate genes or other important markers - are two phases in the human genome project. The human genome is a complete genetic "blueprint" - a detailed plan of every gene expressed on all 23 pairs of chromosomes.

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Keywords: biochemistry, biotechnology, dna, dna lab, dna research, dna sequencing gel, electrophoresis gel, genetic, genetics, genome project, hood, human, human genome project, laboratory, leroy

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