Set of human chromosomes,coloured scanning election micrograph (SEM). Chromosomes are a packaged form of the genetic material deoxyribonucleic acid (DNA). The DNA condenses into chromosomes during cell replication for ease of division and transport into the new cell. A complete set of chromosomes is known as a karyotype. In humans,there are 46 chromosomes,consisting of 23 pairs. Pair 23 is the sex chromosomes,either xx for females or xy for males. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 6827 px × 5120 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |