Rarest Human Chromosome — All 22 Answers Ranked by Rarity
22 answers are accepted for “Name a human chromosome”. Chromosome 14 is the rarest human chromosome in this ranking, with 5,303 monthly Wikipedia views (rarity 1.000, Legendary). Chromosome 20 is the second-rarest with 5,571 monthly Wikipedia views, 1.05× the figure for Chromosome 14. Chromosome 21 is the most common human chromosome in this ranking, with 37,418 monthly Wikipedia views, 7.06× the figure for the rarest. Combined monthly Wikipedia views across the 22 answers: 268,447. Chromosome 14 is 2.0% of that total. 5 answers are Epic or Legendary: Chromosome 14 (Legendary), Chromosome 20 (Legendary), Chromosome 10 (Epic), and 2 more.
Quick answer
Monthly English Wikipedia pageviews. Source: Wikidata + Wikipedia pageviews (2026-10).
Ranked answers
| Rank | Answer | Tier | Rarity | Monthly Wikipedia views |
|---|---|---|---|---|
| 1 | Chromosome 14 on Wikipedia | Legendary | 1.000 | 5,303 |
| 2 | Chromosome 20 on Wikipedia | Legendary | 0.952 | 5,571 |
| 3 | Chromosome 10 on Wikipedia | Epic | 0.905 | 5,662 |
| 4 | Chromosome 18 on Wikipedia | Epic | 0.857 | 6,082 |
| 5 | Chromosome 12 on Wikipedia | Epic | 0.810 | 6,173 |
| 6 | Chromosome 19 on Wikipedia | Rare | 0.762 | 7,293 |
| 7 | Chromosome 13 on Wikipedia | Rare | 0.714 | 7,727 |
| 8 | Chromosome 5 on Wikipedia | Rare | 0.667 | 7,928 |
| 9 | Chromosome 4 on Wikipedia | Rare | 0.619 | 8,267 |
| 10 | Chromosome 9 on Wikipedia | Uncommon | 0.571 | 8,461 |
| 11 | Chromosome 17 on Wikipedia | Uncommon | 0.524 | 9,453 |
| 12 | Chromosome 16 on Wikipedia | Uncommon | 0.476 | 9,786 |
| 13 | Chromosome 15 on Wikipedia | Uncommon | 0.429 | 10,262 |
| 14 | Chromosome 11 on Wikipedia | Familiar | 0.381 | 10,346 |
| 15 | Chromosome 6 on Wikipedia | Familiar | 0.333 | 10,875 |
| 16 | Chromosome 7 on Wikipedia | Familiar | 0.286 | 11,293 |
| 17 | Chromosome 22 on Wikipedia | Familiar | 0.238 | 11,483 |
| 18 | Chromosome 3 on Wikipedia | Common | 0.190 | 16,223 |
| 19 | Chromosome 8 on Wikipedia | Common | 0.143 | 17,269 |
| 20 | Chromosome 1 on Wikipedia | Common | 0.095 | 22,039 |
| 21 | Chromosome 2 on Wikipedia | Common | 0.048 | 33,533 |
| 22 | Chromosome 21 on Wikipedia | Common | 0.000 | 37,418 |
FAQ
What is the rarest human chromosome?
Chromosome 14 is the rarest human chromosome in this ranking, with 5,303 monthly Wikipedia views (rarity 1.000, Legendary).
How many human chromosomes are there?
There are 22 human chromosomes in this ranking, from Chromosome 14 (rarest) to Chromosome 21 (most common).
What is the most common human chromosome?
Chromosome 21 is the most common human chromosome in this ranking, with 37,418 monthly Wikipedia views (Common).
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Sources
Recorded source: Wikidata + Wikipedia pageviews (2026-10). The answer list is compiled from Wikidata (CC0), and the view counts are monthly English Wikipedia pageviews. Rarity is the percentile of the popularity figure inside this prompt: 1 is the rarest and 0 is the most common. Linked names open the English Wikipedia article stored on that answer.