X and Y chromosomes. Computer artwork of an X (right) and a Y (left) chromosome. Chromosomes are made of very condensed deoxyribonucleic acid (DNA). DNA contains sections,called genes,which encode the body's genetic information. An individual's sex is determined by the presence or absence of the Y chromosome. Women have two X chromosomes,while men have an X and a Y. The Y chromosome is much smaller than the X. This is because it only contains genes for 'maleness',for example,a gene that triggers the development of the testes | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 5000 px × 5000 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |