3D-computer illustration of a human X chromosome,one of the two sex chromosomes. Within almost every human cell are 46 chromosomes of which 22 pairs are the same in females and males. The last pair is composed of two X chromosomes for a female whereas a male has one X and one Y chromosome. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Pasieka, Alfred |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |