DNA within sperm. Computer artwork of DNA within the head of a sperm cell (spermatozoon) on a background of spermatozoa. Sperm cells carry one half of the gentic material (DNA) for a new human. The other half is in the female sex cell (ovum,not seen),with which one sperm merges during fertilisation. A molecule of DNA (deoxyribonucleic acid) consists of two helical strands coiled around the same axis. There are four nucleotide bases that hold the two helical strands together in a double helix; 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: | 5500 px × 2500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |