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I've read somewhere about some form of 50/500 rule - an initial population of 50 would have enough genetic material to last 2000 years, while an initial population of 500 can last indefinatly as long as there aren't disasters. It sounds plausable, but I'm note sure the actual name or reasoning behind it. Any information where this comes from? --Sigma 7 (talk) 17:44, 8 July 2010 (UTC)

Google brings up this wikipedia article which gives
Researchers in conservation biology have tended to adopt the 50/500 rule of thumb initially advanced by Franklin and Soule.
but I haven't tracked down Franklin and Soule - that is left as an exercise for the student. Jack Hughes (talk) 17:49, 8 July 2010 (UTC)

Inbreeding is likely to occur in the first 'viable colonies on other planets' ('the transition to civilization occurs when there are fewer than ten ways you are your own cousin and you don't mention the number of spaceport brats (adding to the gene pool) in your family tree.') (talk) 23:01, 30 December 2016 (UTC)