2 ms·

I don't think 1 in 16 is "quite rare." If you've got 100 people you know by name (and you likely have more), 6 of them have got this.

• LocalH 7y ago
  May have this. Odds don't necessarily imply even distribution amongst a given sub-population. A person could know 1,000 people and still not know a single tetrachromat, and another person could know 10 people and know multiple tetrachromats.
  • fwip 7y ago
    No, 100 of 100 "may" have this.