|MadSci Network: Genetics|
What is totally unique about an individual ? Well, I am not an expert in this subject, but here is a short list of attributes of an individual that are totally unique : Fingerprints Palm prints (basically the skin ridge pattern on any part of your body) Retinal vein patterns Dentition DNA Hair Patterns Vocal patterns Brain wave patterns Quite a bit actually. As to the question of fingerprint similarity among families - the answer is yes. Family members do tend to have similar fingerprints, but on a larger scale so do ethnic groups. I hope I have been of help.
Try the links in the MadSci Library for more information on Genetics.