DNA in space. Computer artwork of a DNA double helix in space above Earth. This may represent the possible uniqueness of Earth as a cradle of life in the universe,or the ubiquity of DNA and the related RNA in life on Earth. A molecule of DNA (deoxyribonucleic acid) consists of two helical chains coiled around the same axis,each chain consisting of alternate phosphate and sugar groups. The chains are held together in a double helix by the hydrogen bonds formed between nucleotide bases attached to the two chains. There are four bases; adenine (A),cytosine (C),guanine (G) and thymine (T). The sequence of the bases in the molecule forms the genetic code | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Darkin, Christian |
Bildgröße: | 5087 px × 2750 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |