DNA change

William also sent in this link – www.yahoo.com/lifestyle/nasa-astronaut-spent-space-now-different-dna-twi… … NASA used astronaut Scott Kelly and his twin brother in  a space experiment – in order to study space effects. The results were surprising. It seems a brief spell on the international space station was enought to change the genes of one of the twins – not by a great order of magnitude, but enough to say for sure that this occurred. Long time space travel causes significant change to the body, it would seem, but what does it say about using DNA as a sure fire peice of genetic research into the remoter past.