LOL, I'm not sure what you mean by that. But -- as wikipedia stated, many many years ago (according to scientific musings and speculations), apparently in that "bottleneck" of humankind a long time ago, there were relatively few humans alive. Says the article, "It is supported by some genetic evidence suggesting that today's humans are descended from a very small population of between 1,000 and 10,000 breeding pairs that existed about 70,000 years ago." Regardless of what you believe, yes, I was wondering how many can come from a few. Quite a few, apparently.
(Notice the phrase, "supported by some genetic evidence..." )
See? There's your evidence. (Supported by some genetic evidence.) (Citations in the article.) Anyway, doesn't matter -- many can come from just a few...
Toba catastrophe theory - Wikipedia