DNA helix. Hand holding a model of a double helix of DNA (deoxyribonucleic acid),which is formed of spiralling paired strands of sugar phosphates that are linked by nucleotide base pairs. There are four bases: adenine,thymine,guanine & cytosine (coloured links) that when paired form struts,as on a ladder. The arrangement of the bases along a helix of DNA is the genetic code for protein synthesis and the functioning & growth of every living organism. DNA is found in cell nuclei | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lawry, Lawrence |
Taille de l’image : | 3696 px × 4730 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |