Mitochondrial DNA #5
Mitochondrial DNA in front of a mitochondrion (green). Mitochondria are small organelles thought to be descended from internalised bacteria.They contain their own DNA (circular like bacterial DNA). Mitochondria in egg cells replicate as the fertilised egg divides and so the next generation carries mtDNA from the mother (not the father, sperm do not contribute any mitochondria during fertilisation). Family trees can be drawn up based on mtDNA. Certain diseases are inherited via the mitochondria.
Illustration ID: Mitochondrial-DNA-5
Author: Russell Kightley
copyright Russell Kightley
Illustration size: 16.8 Mpixels (48 MB uncompressed) - 4096x4096 pixels (13.6x13.6 in / 34.7x34.7 cm at 300 dpi)