Caption:
The first DNA fingerprint. The first three lanes contain DNA from a woman, her mother and her father respectively. Lanes 4 - 11 contain DNA from assorted other species including mouse, baboon, lemur, cow, grey seal and tobacco (last lane). The DNA probe used in this experiment detected tandomly repeated short stretches of DNA called minisatellites whose length varies between individuals. Supplied by Alec Jeffreys courtesy of Wellcome Images.