DNA molecules. Computer illustration of double stranded DNA (deoxyribonucleic acid) molecules. DNA is composed of two strands twisted into a double helix. Each strand consists of a sugar-phosphate backbone attached to nucleotide bases. There are four bases: adenine,cytosine,guanine and thymine,which are joined together by hydrogen bonds. DNA contains sections called genes that encode the body's genetic information | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / De Angelis, Maurizio |
Taille de l’image : | 3620 px × 4827 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |