There are a couple of other questions that get CLOSE to this one, but mine is much more basic. The other estimates are for colony size or country size, and these take into account technology, accidents, disasters, etc. I want to know simply how many men and women, assuming an equal ratio of men to women and monogamy. I want to know how many people there needs to be to;

A) roughly maintain their numbers, growing slightly, but not more than 10%/year (I know the answers will be rough estimates)


B) not produce genetic decay due to limited genetic variance.

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    $\begingroup$ Can you explain why those other answers aren't relevant to your case? The population size to ensure a colony maintains healthy genetic diversity should satisfy your answer. There is an answer here that describes the numbers required given certain starting assumptions. Select the starting assumptions that most closely corresponds to your specifics (e.g. I think the number is 500 to 5000, depending upon the details of your needs). $\endgroup$
    – Jim2B
    Commented Mar 9, 2016 at 5:21
  • $\begingroup$ Welcome aboard, Jimmy. Your question does not look related to the theme of this site (world building). It is more related to genetics and research with little concern about world building. Anyway, I won't vote a closure on your question and hope someone would reword it for fit the scope of this site :) $\endgroup$ Commented Mar 9, 2016 at 7:21
  • $\begingroup$ p.s. research on human genome suggests all modern day humans were born from a very small (around 20-50) group of humans who migrated out of Africa some 200,000 years ago. The bottleneck effect can be seen in some of human genes. Cheetahs also have extremely low genetic diversity but are still carrying on flawlessly so far. If you had 200 healthy people from different continents today, they should provide you with enough genetic diversity to not get wiped out by a single epidemic or pandemic that hits later in the course of history (after 2000 to 3000 years or so). $\endgroup$ Commented Mar 9, 2016 at 7:25
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    $\begingroup$ Monogamy ? I strongly recommend to remove that criteria to get a better chance with your small colony. $\endgroup$
    – Carlos2W
    Commented Mar 9, 2016 at 15:38
  • 4
    $\begingroup$ possible duplicate: worldbuilding.stackexchange.com/q/3/2071 $\endgroup$ Commented Mar 10, 2016 at 8:51


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