JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
Human DNA sequence. Computer screen display of a human DNA (deoxyribonucleic acid) sequence as a series of coloured bands. This is for the human genome project. DNA consists of two long strands linked by the interactions of bases along their lengths. Each colour represents a specific base. The sequence of bases makes up the genetic code in the form of genes, segments of DNA which have specific functions within an organism. By studying the genes in human DNA, a greater understanding of genetic diseases and heredity can be achieved. Photographed at the Sanger Centre in Cambridge, England.
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