Chromosome 21

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Chromosome 21

Quality:

Human chromosome 21 - human chromosome. Article “Chromosome 21” in Simple English Wikipedia has 0.5 points for quality (as of July 1, 2025).

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Simple English) language version.

Since the creation of article “Chromosome 21”, its content was written by 2 registered users of Simple English Wikipedia and edited by 473 registered Wikipedia users in all languages.

The article is cited 2 times in Simple English Wikipedia and cited 2166 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Simple English): #2124 in November 2020
  • Global: #12439 in June 2012

The highest popularity rank from 2008:

  • Local (Simple English): #58118 in November 2020
  • Global: #49675 in February 2023

There are 30 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
Chromosome 21
48.226
2German (de)
Chromosom 21 (Mensch)
35.2333
3Latin (la)
Chromosoma 21 (homo)
31.1662
4Min Nan (zhminnan)
21 hō jiám-sek-thé (lâng)
30.6353
5Croatian (hr)
Kromosom 21 (čovjek)
28.9713
6Estonian (et)
21. kromosoom
24.7918
7Catalan (ca)
Cromosoma 21
21.1973
8Romanian (ro)
Cromozomul uman 21
20.0649
9Russian (ru)
21-я хромосома человека
18.0705
10Spanish (es)
Cromosoma 21
17.9954
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Chromosome 21" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Chromosome 21
1 456 402
2Spanish (es)
Cromosoma 21
736 666
3German (de)
Chromosom 21 (Mensch)
212 504
4Japanese (ja)
21番染色体 (ヒト)
186 055
5Polish (pl)
Chromosom 21
163 549
6French (fr)
Chromosome 21 humain
149 077
7Italian (it)
Cromosoma 21
147 641
8Portuguese (pt)
Cromossomo 21
136 773
9Chinese (zh)
21號染色體
81 834
10Russian (ru)
21-я хромосома человека
79 892
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Chromosome 21" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Chromosome 21
4 075
2Spanish (es)
Cromosoma 21
917
3Chinese (zh)
21號染色體
493
4Russian (ru)
21-я хромосома человека
410
5Japanese (ja)
21番染色体 (ヒト)
405
6German (de)
Chromosom 21 (Mensch)
278
7Italian (it)
Cromosoma 21
246
8French (fr)
Chromosome 21 humain
232
9Vietnamese (vi)
Nhiễm sắc thể số 21
231
10Persian (fa)
کروموزوم ۲۱ (انسان)
190
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Chromosome 21" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Chromosome 21
120
2German (de)
Chromosom 21 (Mensch)
50
3French (fr)
Chromosome 21 humain
42
4Italian (it)
Cromosoma 21
30
5Spanish (es)
Cromosoma 21
27
6Norwegian (no)
Kromosom 21
20
7Polish (pl)
Chromosom 21
19
8Russian (ru)
21-я хромосома человека
19
9Hungarian (hu)
Humán 21-es kromoszóma
16
10Dutch (nl)
Chromosoom 21
14
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Chromosome 21" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Chromosome 21
1
2Spanish (es)
Cromosoma 21
1
3Galician (gl)
Cromosoma 21
1
4Swedish (sv)
Kromosom 21
1
5Arabic (ar)
صبغي 21
0
6Catalan (ca)
Cromosoma 21
0
7German (de)
Chromosom 21 (Mensch)
0
8Estonian (et)
21. kromosoom
0
9Persian (fa)
کروموزوم ۲۱ (انسان)
0
10French (fr)
Chromosome 21 humain
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Chromosome 21" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Chromosome 21
464
2Ukrainian (uk)
Хромосома 21 (людина)
276
3Arabic (ar)
صبغي 21
131
4Chinese (zh)
21號染色體
117
5Portuguese (pt)
Cromossomo 21
98
6Russian (ru)
21-я хромосома человека
95
7Italian (it)
Cromosoma 21
93
8Galician (gl)
Cromosoma 21
75
9French (fr)
Chromosome 21 humain
72
10German (de)
Chromosom 21 (Mensch)
66
More...

Scores

Estimated value for Wikipedia:
Simple English:
Global:
Popularity in June 2025:
Simple English:
Global:
Popularity in all years:
Simple English:
Global:
Authors in June 2025:
Simple English:
Global:
Registered authors in all years:
Simple English:
Global:
Citations:
Simple English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
صبغي 21
caCatalan
Cromosoma 21
deGerman
Chromosom 21 (Mensch)
enEnglish
Chromosome 21
esSpanish
Cromosoma 21
etEstonian
21. kromosoom
faPersian
کروموزوم ۲۱ (انسان)
frFrench
Chromosome 21 humain
glGalician
Cromosoma 21
hrCroatian
Kromosom 21 (čovjek)
huHungarian
Humán 21-es kromoszóma
itItalian
Cromosoma 21
jaJapanese
21番染色体 (ヒト)
koKorean
21번 염색체
laLatin
Chromosoma 21 (homo)
nlDutch
Chromosoom 21
noNorwegian
Kromosom 21
plPolish
Chromosom 21
ptPortuguese
Cromossomo 21
roRomanian
Cromozomul uman 21
ruRussian
21-я хромосома человека
shSerbo-Croatian
Hromozom 21 (čovek)
simpleSimple English
Chromosome 21
srSerbian
Хромозом 21 (човек)
svSwedish
Kromosom 21
trTurkish
Kromozom 21 (insan)
ukUkrainian
Хромосома 21 (людина)
viVietnamese
Nhiễm sắc thể số 21
zhChinese
21號染色體
zhminnanMin Nan
21 hō jiám-sek-thé (lâng)

Popularity rank trends

Best Rank Simple English:
#58118
11.2020
Global:
#49675
02.2023

AI rank trends

Best Rank Simple English:
#2124
11.2020
Global:
#12439
06.2012

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Human chromosome 21 from Wikipedia articles about Down syndrome, Chromosome, List of human genes, Edwards syndrome‎ and Human chromosome 22. Whereas reading the article about Human chromosome 21 people most often go to Wikipedia articles on Chromosome, Down syndrome, Human chromosome 22, Autosome and Trisomy.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 21 February 2026

On 21 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Alysa Liu, Eric Dane, 2026 Winter Olympics, Rebecca Gayheart, Johannes Høsflot Klæbo, Wuthering Heights, amyotrophic lateral sclerosis, Andrew Mountbatten-Windsor, John F. Kennedy Jr..

In Simple English Wikipedia the most popular articles on that day were: Manon Bannerman, Black, List of European countries, XXXTentacion, Jeffrey Epstein, Megan Skiendiel, Jacqueline Kennedy Onassis, Katseye, List of people who have walked on the Moon, Golden Edge.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information