So, I assume that if you put 100 people on a spaceship and sent them to wherever, they’d get very inbred in a few generations. How many people would you need for this to not happen, accounting for the fact that there will eventually be people who are infertile or die before having children?
I like your answer because I feel the only real answer you can have is “more is better, less is worse”
How many should you take for good diversity? All 8 billion, more if you can find them.