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There is an achievement (that can be seen from the police station achievements wall on page 3) that says "Get a quick surprise at the gene pool". I've been playing for weeks and still have yet to encounter this. Any ideas on what triggers this? I'm also already at 118/150 for types of jobs found, but I'm not sure if there's a "gene pool" structure I still haven't unlocked or there's something else I need to do.

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As it turns out, when you unlock the geneticist (which I did at about 135/150) you also unlock the "Gene Pool" building. Mine is still under construction, but I can update more after it is built if things are not completely obvious from there.

And incase you are wondering how to make a geneticist:

scientist + doctor = geneticist

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