BSIP, ERMAKOFF / SCIENCE PHOTO LIBRARY BSIP, ERMAKOFF / SCIENCE PHOTO LIBRARY
DNA sequence. Computer screen display of a DNA (deoxyribonucleic acid) sequence. DNA consists of two long strands linked by pairs of chemical bases called nucleotides. Each coloured band represents one of the four bases. The sequence of bases forms the genetic code. DNA contains all the inherited instructions necessary to control the development and functioning of living organisms.
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