DNA molecules. Computer artwork of molecules of deoxyribonucleic acid (DNA). DNA is composed of two strands twisted into a double helix. Each strand consists of an outer sugar-phosphate backbone (thicker tubes) with nucleotide bases attached (tubes inside helix). There are four different bases: guanine,cytosine,thymine and adenine. Guanine always pairs with cytosine and adenine always pairs with thymine. DNA contains sections,called genes,which encode the body's genetic information. Genes determine each cell's structure,function and behaviour | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Laguna Design |
Taille de l’image : | 4900 px × 3675 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |