DNA sequence. Artwork showing a long sequence of four nucleotide bases in a single strand of DNA (deoxyribonucleic acid). Some of the DNA sequence is encircling a sphere. It is the sequence of bases that determines the genetic instructions necessary to build an organism. Here each base is represented by a letter: adenine (A),thymine (T),cytosine (C) and guanine (G). In the normal double stranded DNA molecule,these bases pair up: C-G and A-T (not seen here). A gene is made up of a sequence of such base pairs,and the sequence may characterise one of the many genetic traits in humans such as hair or eye colour | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4652 px × 3831 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |