Human chromosome 16, coloured scanning electron micrograph (SEM). Chromosomes are a packaged form of the genetic material DNA (deoxyribonucleic acid). Each consists of two identical, parallel strands (chromatids, left and right), joined at an area called a centromere (centre, green). The tips (blue) are called telomeres. Humans have 23 pairs of chromosomes. This is chromosome 16, which carries between 850 and 1200 genes. Gene defects on this chromosome are related to diseases such as Crohn's disease and thalassaemia, and may also contribute to obesity. Magnification: x19,500 when printed 10 centimetres tall.

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.