DNA. Computer representation of deoxyribonucleic acid (DNA). This structure contains the inherited instructions necessary for the development of living organisms. A DNA molecule is composed of two interwound strands twisted into a helical shape which gives it great stability. Each strand alternates a sugar group (red-yellow) with a phosphate group (blue). The two strands are linked by pairs of substances called bases,not clearly visible here,of which there are four types known as adenine,guanine,thymine and cytosine. Each pair of bases is linked by hydrogen bonds | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Camazine, Scott |
Taille de l’image : | 3303 px × 4725 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
|