List of organisms by chromosome count

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Karyotype of a human being, showing 22 pair of autosomal chromosomes and both the XX female and the XY male possibilities for the pair of sex chromosome
Fusion of ancestral chromosomes left distinctive remnants of telomeres, and a vestigial centromere. As other non-human extant hominidae have 48 chromosomes it is believed that the human chromosome 2 is the end result of the merging of two chromosomes.[1]

The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms. This number, along with the visual appearance of the chromosome, is known as the karyotype,[2][3][4] and can be found by looking at the chromosomes through a microscope. Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics.[5] The preparation and study of karyotypes is part of cytogenetics.

  Other Eukaryotes
(Scientific name)
Chromosome number Picture Karyotype Notes Source
Jack jumper ant
(Myrmecia pilosula)
2/1 Myrmecia.pilosula.jpg 2 for females, males are haploid and thus have 1; smallest number possible. Other ant species have more chromosomes.[6] [6]
Australian daisy
(Brachyscome dichromosomatica)
12 Brachyscome iberidifolia1.jpg This species can have more B chromosomes than A chromosomes at times, but 2n=4. [7]
Spider mite (Tetranychidae) 4–14 Tetranychus urticae with silk threads.jpg Spider mites (family Tetranychidae) are typically haplodiploidy (males are haploid, while females are diploid)[8] [8]
Yellowfever mosquito
(Aedes aegypti)
6 Aedes aegypti.jpg Yellow Fever Mosquito (Aedes aegypti) chromosomes.png The 2n=6 chromosome number is conserved in the entire family Culicidae, except in Chagasia bathana, which has 2n=8.[9] [9]
Indian muntjac
(Muntiacus muntjak)
6/7 Muntjac deer.JPG Karyotype of Indian muntjac (Muntiacus muntjak).png 2n = 6 for females and 7 for males. The lowest diploid chromosomal number in mammals.[10] [11]
Hieracium 8 Yellow Hawkweed.jpg
Fruit fly
(Drosophila melanogaster)
8 Drosophila melanogaster - side (aka).jpg Drosophila metaphase chromosomes female.png 6 autosomal, and 2 sexual [12]
Macrostomum lignano
(Macrostomum lignano)
8 Macrostomum lignano.jpg Karyotype of Macrostomum lignano.png [13]
Thale cress
(Arabidopsis thaliana)
10 Arabidopsis thaliana.jpg Karyotype of Thale cress (Arabidopsis thaliana).png
Swamp wallaby
(Wallabia bicolor)
10/11 Image-Swamp-Wallaby-Feeding-4,-Vic,-Jan.2008.jpg Karyotype of swamp wallaby (Wallabia bicolor).png 11 for male, 10 for female [14]
(Caenorhabditis elegans)
12/11 Adult Caenorhabditis elegans.jpg Karyotype of Caenorhabditis elegans.png 12 for hermaphrodites, 11 for males
(Spinacia oleracea)
12 Wurzelspinat02.jpg Karyotype of Spinach (Spinacia oleracea L. Mazeran).png [15]
Broad bean
(Vicia faba)
12 Fava beans 1.jpg Karyotype of Broad bean (Vicia faba).png [16]
Yellow dung fly
(Scathophaga stercoraria)
12 Fliege9012.JPG Karyotype of female yellow dung fly (Scathophaga stercoraria).png 10 autosomal and 2 sex chromosomes. Males have XY sex chromosomes and females have XX sex chromosomes. The sex chromosomes are the largest chromosomes and constitute 30% of the total length of the diploid set in females and about 25% in males.[17] [17]
Slime mold
(Dictyostelium discoideum)
12 Dictyostelium Fruiting Bodies.JPG [18]
(Cucumis sativus)
14 Komkommer plant.jpg Karyotype of cucumber (Cucumis sativus).png [19]
Tasmanian devil
(Sarcophilus harrisii)
14 Sarcophilus harrisii taranna.jpg Karyotype of Tasmanian devil (Sarcophilus Harrisii).png
(Secale cereale)
14 Rye Mature Grain Summer.jpg Karyotype of Austrian rye (Secale cereale).png [20]
(Pisum sativum)
14 Peas in pods - Studio.jpg Karyotype of pea (Pisum sativum).png [20]
(Hordeum vulgare)
14 Hordeum-barley.jpg Karyotype of barley (Hordeum vulgare).png [21]
Aloe vera 14 Aloe vera 1.jpg Karyotype of Aloe vera.png The diploid chromosome number is 2n = 14 with four pair of long acrocentric chromosomes ranging from 14.4 μm to 17.9 μm and three pair of short sub metacentric chromosomes ranging from 4.6 μm to 5.4 μm.[22] [22]
(Phascolarctos cinereus)
16 Koala climbing tree.jpg
Kangaroo 16 Macropus robustus2.jpg Karyotype of wallaroo (Macropus robustus).png This includes several members of genus Macropus, but not the red kangaroo (M. rufus, 20) [23]
Schistosoma mansoni 16 Schistosoma mansoni trematodes.jpg Karyotype of Schistosoma mansoni.png 2n=16. 7 autosomal pairs and ZW sex-determination pair.[24] [24]
Welsh onion
(Allium Fistulosum)
16 Spring Onion.jpg DAPI stained Welsh onion (Allium fistulosum) chromosomes.png [25]
(Allium sativum)
16 All Garlic Ail Ajo.jpg Karyotype of garlic (Allium sativum).png [25]
Itch mite
(Sarcoptes scabiei)
17/18 Sarcoptes scabei 2.jpg Chromosomal spreads of single itch mite (Sarcoptes scabiei) cell - 17 chromosomes.png According to the observation of embryonic cells of egg, chromosome number of the itch mite is either 17 or 18. While the cause for the disparate numbers is unknown, it may arise because of an XO sex determination mechanism, where males (2n=17) lack the sex chromosome and therefore have one less chromosome than the female (2n=18).[26] [26]
(Raphanus sativus)
18 Raphanus sativus subsp. sativus, radijs (1).jpg Karyotype of radish (Raphanus sativus).png [20]
(Daucus carota)
18 Baby carrots - jules.jpg Karyotype of carrot (Daucus carota).png The genus Daucus includes around 25 species. D. carota has nine chromosome pairs (2n = 2x = 18). D. capillifolius, D. sahariensis and D. syrticus are the other members of the genus with 2n = 18, whereas D. muricatus (2n = 20) and D. pusillus (2n = 22) have a slightly higher chromosome number. A few polyploid species as for example D. glochidiatus (2n = 4x = 44) and D. montanus (2n = 6x = 66) also exist.[27] [27]
(Brassica oleracea)
18 Choux 02.jpg Karyotype of Brussels sprout (Brassica oleracea var. gemmifera).png Broccoli, cabbage, kale, kohlrabi, brussels sprouts, and cauliflower are all the same species and have the same chromosome number.[20] [20]
(Citrus x)
18 Lemon, Lime and Orange.jpg Karyotype of Lemon (Citrus limon).png Chromosome number of the genus Citrus, which including lemons, oranges, grapefruit, pomelo and limes, is 2n = 18.[28] [29]
Passion fruit
(Passiflora edulis)
18 Passionfruit and cross section.jpg Karyotype of passion fruit (Passiflora edulis).png [30]
Setaria viridis
(Setaria viridis)
18 エノコログサSetaria viridis (L.) P.Beauv.P9130041.JPG Karyotype of Setaria viridis.png [31]
(Zea mays)
20 Klip kukuruza uzgojen u Međimurju (Croatia).JPG C-banded karyograms of Maize.png [20]
(Cannabis sativa)
20 Cannabis sativa leaf.jpg Karyotype of Hemp (Cannabis sativa).png
Western clawed frog
(Xenopus tropicalis)
20 Xenopus tropicalis02.jpeg Karyotype of Western clawed frog (Xenopus (Silurana) tropicalis).png [32]
Australian pitcher plant
(Cephalotus follicularis)
20 Cephalotus follicularis 002.jpg [33]
(Theobroma cacao)
20 Matadecacao.jpg Karyotype of cacao.png [34]
22 700 yr red river gum02.jpg Karyotype of river red gum (Eucalyptus camaldulensis).png Although some contradictory cases have been reported, the large homogeneity of the chromosome number 2n = 22 is now known for 135 (33.5%) distinct species among genus Eucalyptus.[35] [36]
Virginia opossum
(Didelphis virginiana)
22 Opossum 2.jpg [37]
(Phaseolus sp.)
22 Phaseolus vulgaris MHNT.BOT.2016.24.73.jpg Karyotype of Common bean (Phaseolus vulgaris).png All species in the genus Phaseolus have the same chromosome number, including common bean (P. vulgaris), runner bean (P. coccineus), tepary bean (P. acutifolius) and lima bean (P. lunatus).[20] [20]
Snail 24 Grapevinesnail 01.jpg
(Cucumis melo)
24 Cucumis melo 34.jpg Karyotype of melon (Cucumis melo L.).png [38]
(Oryza sativa)
24 US long grain rice.jpg Karyotype of rice (Oryza sativa).png [20]
Silverleaf nightshade
(Solanum elaeagnifolium)
24 Solanum elaeagnifolium.jpg [39]
Sweet chestnut
(Castanea sativa)
24 Frucht der Edelkastanie.jpg Karyotype of Sweet chestnut (Castanea sativa).png [40]
(Solanum lycopersicum)
24 Bright red tomato and cross section02.jpg Karyotype of tomato (Solanum lycopersicum).png [41]
European beech
(Fagus sylvatica)
24 Hayedomasaustral.jpg Karyotype of European beech (Fagus sylvatica).png [42]
Bittersweet nightshade
(Solanum dulcamara)
24 SolanumDulcamara-bloem-sm.jpg [43][44]
Cork oak
(Quercus suber)
24 ChampagneCorksLarge.jpg Karyotype of Cork oak (Quercus suber).png [45]
Edible frog
(Pelophylax kl. esculentus)
26 Rana esculenta on Nymphaea edit.JPG Karyotype of Edible frog (Pelophylax esculentus).png Edible frog is the fertile hybrid of the pool frog and the marsh frog.[46] [47]
(Ambystoma mexicanum)
28 AxolotlBE.jpg Karyotype of axolotl (Ambystoma mexicanum).png [48]
Bed bug
(Cimex lectularius)
29-47 Bedbug004.jpg Karyotype of male bed bug (Cimex lectularius).png 26 autosomes and varying number of the sex chromosomes from three (X1X2Y) to 21 (X1X2Y+18 extra Xs).[49] [49]
Pill millipede
(Arthrosphaera magna attems)
30 Pillmillipede talakaveri.jpg [50]
(Giraffa camelopardalis)
30 Giraffen.jpg Karyotype of giraffe (Giraffa camelopardalis).png [51]
American mink
(Neovison vison)
30 American mink 2083077.jpg
(Pistacia vera)
30 ARS pistachio.jpg Karyotype of Pistachio (Pistacia vera).png [52]
(Saccharomyces cerivisiae)
32 S cerevisiae under DIC microscopy.jpg
European honey bee
(Apis mellifera)
32/16 BeeCropped.jpg Karyotype of Honey bee (Apis mellifera).png 32 for females (2n = 32), males are haploid and thus have 16 (1n =16).[53] [53]
American badger
(Taxidea taxus)
32 AmericanBadger.JPG
(Medicago sativa)
32 Graines de luzerne bio germées - 001.JPG Karyotype of tetraploid Alfalfa (Medicago sativa ssp falcata).png Cultivated alfalfa is tetraploid, with 2n=4x=32. Wild relatives have 2n=16.[20]:165 [20]
Red fox
(Vulpes vulpes)
34 Vulpes vulpes 2.jpg Plus 3-5 microsomes. [54]
(Helianthus annuus)
34 Lule Dielli.JPG Karyotype of sunflower (Helianthus annuus).png [55]
(Erethizon dorsatum)
34 Porcupine-BioDome.jpg [56]
Globe artichoke
(Cynara cardunculus var. scolymus)
34 Artichoke J1.jpg Karyotype of globe artichoke.png [57]
Yellow mongoose
(Cynictis penicillata)
36 Yellow mongoose 1.jpg
Tibetan sand fox
(Vulpes ferrilata)
36 Tibet Fox.jpg
36 Nerr0878.jpg
Red panda
(Ailurus fulgens)
36 Ailurus fulgens RoterPanda LesserPanda.jpg
(Suricata suricatta)
36 Meerkat feb 09.jpg
(Manihot esculenta)
36 Manihot esculenta 001.jpg Karyotype of Cassava (Manihot esculenta).png [58]
Long-nosed cusimanse
(crossarchus obscurus)
36 Crossarchus obscurus Plzen zoo 02.2011.jpg
(Lumbricus terrestris)
36 Regenwurm1.jpg
African clawed frog
(Xenopus laevis)
36 Xenopus laevis 1.jpg Karyotype of African clawed frog (Xenopus laevis).png [32]
Waterwheel plant
(Aldrovanda vesiculosa)
38 Aldrovanda vesiculosa.jpg [33]
(Panthera tigris)
38 Tigress at Jim Corbett National Park.jpg Karyotype of Siberian tiger.png
Sea otter
(Enhydra lutris)
38 Sea otter.jpg
(Martes zibellina)
38 Sable - 2.png
(Procyon lotor)
38 Procyon lotor (raccoon).jpg [59]
Pine marten
(Martes martes)
38 Baummarder 01.jpg
38 Sus Barbatus, the Bornean Bearded Pig (12616351323).jpg Karyotype of normal male pig.png
Oriental small-clawed otter
(Aonyx cinerea)
38 Otter - melbourne zoo.jpg
(Panthera leo)
38 Lion Ngorongoro Crater.jpg
Fisher 38 Martes martes crop.jpg a type of marten
European mink
(Mustela lutreola)
38 Europäischer Nerz.jpg
Coatimundi 38 Coati.jpg
(Felis silvestris catus)
38 Kittyply edit1.jpg Karyotype of domestic cat (Felis catus).png
Beech marten
(Martes foina)
38 Steinmarder 01.jpg
Baja California ratsnake
(Bogertophis rosaliae)
38 Bogertophis subocularis.jpg [60]
American marten
(Martes americana)
38 Marten with Flowers.jpg
Trans-Pecos ratsnake
(Bogertophis subocularis)
40 Trans-Pecos Rat Snake.jpg [61]
(Mus musculus)
40 Мышь 2.jpg Karyotype of normal male mouse.png [62]
(Mangifera indica)
40 Mangga indramayu 071007-0327 rwg.jpg [20]
40 Spotted Hyena and young in Ngorogoro crater.jpg
(Mustela putorius furo)
40 Furets albinos champagne et zibeline sable.jpg
European polecat
(Mustela putorius)
40 Ilder.jpg
Beaver (American)
(Castor canadensis)
40 Castor canadensis.jpg
(Arachis hypogaea)
40 Arachis-hypogaea-(peanuts).jpg Karyotype of cultivated peanut (Arachis hypogaea).png Cultivated peanut is a allotetraploid (2n = 4x = 40). Its closest relatives are the diploid (2n = 2x = 20).[63] [63]
(Gulo gulo)
42 Gulo gulo 01.jpg
(Triticum aestivum)
42 Wheat (Triticum aestivum L.) at Alnarp 1.jpg Karyotype of wheat (Triticum aestivum).png This is a hexaploid with 2n=6x=42. Durum wheat is Triticum turgidum var. durum, and is a tetraploid with 2n=4x=28.[20] [20]
Rhesus monkey
(Macaca mulatta)
42 Macaca mulatta in Guiyang.jpg Karyotype of normal male rhesus macaque (Macaca mulatta).png [64]
(Rattus norvegicus)
42 Rattus norvegicus 1.jpg Karyogram of normal rat.png [65]
(Avena sativa)
42 Avena sativa 002.JPG Karyotype of hexaploid common wild oat (Avena fatua).png This is a hexaploid with 2n=6x=42. Diploid and tetraploid cultivated species also exist.[20] [20]
Giant panda
(Ailuropoda melanoleuca)
42 Giant Panda 2004-03-2.jpg
(Cryptoprocta ferox)
42 Cryptoprocta ferox.jpg
European rabbit
(Oryctolagus cuniculus)
44 Oryctolagus cuniculus Tasmania 2.jpg Karyotype of Rabbit (Oryctolagus cuniculus).png
Eurasian badger
(Meles meles)
44 Badger-badger.jpg
Moon jellyfish
(Aurelia aurita)
44 Moon jellyfish at Gota Sagher.JPG [66]
(Delphinidae Delphi)
44 Kentriodon BW.jpg
Coffea arabica
(Coffea arabica)
44 Coffee arabica 12.10.2011 14-01-6.jpg Karyotype of Coffea arabica.png Out of the 103 species in the genus Coffea, arabica coffee is the only tetraploid species (2n = 4x = 44), the remaining species being diploid with 2n = 2x = 22.[67]
Sable antelope
(Hippotragus niger)
46 Sable antelope (Hippotragus niger) adult male.jpg
Reeves's muntjac
(Muntiacus reevesi)
46 Formosan Reeve's muntjac.jpg
(Homo sapiens)
46 Akha cropped hires.JPG Human male karyotpe high resolution.jpg 44 autosomal and 2 sex [68]
Parhyale hawaiensis 46 Parhyale hawaiensis - adult female.png Parhyale hawaiensis - karyotype.png [69]
Water buffalo (river type)
(Bubalus bubalis)
(Nicotiana tabacum)
48 Nicotiana Tobacco Plants 1909px.jpg Karyotype of Tobacco (Nicotiana tabacum).png Cultivated species N. tabacum is an amphidiploid (2n=4x=48) evolved through the interspecific hybridization of the ancestors of N. sylvestris (2n=2x=24, maternal donor) and N. tomentosiformis (2n=2x=24, paternal donor) about 200,000 years ago.[70] [70]
(Solanum tuberosum)
48 Solanum tuberosum 02.jpg Karyotype of Potato (Solanum tuberosum).png This is for common potato Solanum tuberosum (tetraploid, 2n = 4x = 48). Other cultivated potato species may be diploid (2n = 2x = 24), triploid (2n = 3x = 36), tetraploid (2n = 4x = 48), or pentaploid (2n = 5x = 60).[71] Wild relatives mostly have 2n=24.[20] [71]
48 Orang Utan, Semenggok Forest Reserve, Sarawak, Borneo, Malaysia.JPG Karyotype of Orangutan (Pongo).png
48 Polarhase 1 1997-08-04.jpg [72][73]
48 Gorillas in Uganda-1, by Fiver Löcker.jpg
Deer mouse
(Peromyscus maniculatus)
48 Peromyscus maniculatus.jpg
(Pan troglodytes)
48 Lightmatter chimp.jpg Karyotype of chimpanzee (Pan troglodytes).png [74]
Beaver (Eurasian)
(Castor fiber)
48 Beaver pho34.jpg
(Danio rerio)
50 Zebrafisch.jpg Karyotype of zebrafish (Danio rerio).png [75]
Water buffalo (swamp type)
(Bubalus bubalis)
50 Water buffaloes in Wuyishan Wufu 2012.08.24 15-46-30.jpg Karyotype of female Nili Ravi buffalo.png
Striped skunk
(Mephitis mephitis)
50 Striped Skunk (Mephitis mephitis) DSC 0030.jpg
(Ananas comosus)
50 Pineapple victoria dsc07770.jpg [20]
Kit fox
(Vulpes macrotis)
50 Vulpes macrotis mutica with pups.jpg
Spectacled bear
(Tremarctos ornatus)
52 Urso-de-óculos no Zoológico de Sorocaba.JPG
(Ornithorhynchus anatinus)
52 Platypus BrokenRiver QLD Australia.jpg Karyotype of male platypus (Ornithorhynchus anatinus).png Ten sex chromosomes. Males have X1Y1X2Y2X3Y3X4Y4X5Y5, females have X1X1X2X2X3X3X4X4X5X5.[76] [77]
(Gossypium hirsutum)
52 CottonPlant.JPG Karyotype of Cotton (Gossypium hirsutum).png This is for the cultivated species G. hirsutum (allotetraploid, 2n=4x=52). This species accounts for 90% of the world cotton production. Among 50 species in the genus Gossypium, 45 are diploid (2n = 2x = 26) and 5 are allotetraploid (2n = 4x = 52).[78] [78]
(Ovis orientalis aries)
54 Sheep norwegian dala.jpg Karyotype of sheep (Ovis aries).png
54 Procavia-capensis-Frontal.JPG Karyotype of rock hyrax (Procavia capensis).png Hyraxes were considered to be the closest living relatives of Elephants,[79] but sirenians have been found to be more closely related to elephants. [80]
Raccoon dog
(Nyctereutes procyonoides procyonoides)
54 Nyctereutes procyonoides 4 (Piotr Kuczynski).jpg Karyotype of Chinese raccoon dog (Nyctereutes procyonoides procyonoides).png This number is for Chinese raccoon dog (N. p. procyonoides), 2n=54+B(0-4). On the other hand, Japanese raccoon dog (N. p. viverrinus) with 2n=38+B(0-8). Here, B represents B chromosome and its variation in the number between individuals.[81][82] [81]
Capuchin monkey
(Cebus x)
54 Cebus capucinus, Costa Rica.JPG [83]
(Bombyx mori)
56 Silkworm & cocoon.jpg Karyotype of Silkworm (Bombyx mori).png This is for the species mulberry silkworm, B. mori (2n=56). Probably more than 99% of the world's commercial silk today come from this species.[84] Other silk producing moths, called non-mulberry silkworms, have various chromosome numbers. (e.g. Samia cynthia with 2n=25-28,[85] Antheraea pernyi with 2n=98.[86]) [87]
56 Fragaria × ananassa.JPG Karyotype of Strawberry (Fragaria virginiana ssp glauca).png This number is octoploid, main cultivated species Fragaria × ananassa (2n = 8x = 56). In genus Fragaria, basic chromosome number is seven (x = 7) and multiple levels of ploidy, ranging from diploid (2n = 2x = 14) to decaploid (F. iturupensis, 2n = 10x = 70), are known.[88] [88]
(Bos gaurus)
56 Bos gaurus.jpeg
56 Elephant near ndutu.jpg
Woolly mammoth
(Mammuthus primigenius)
58 Mamut lanudo cropped.jpg extinct; tissue from a frozen carcass
(Bos mutus)
60 Bos grunniens - Syracuse Zoo.jpg
(Capra aegagrus hircus)
60 Hausziege 04.jpg Karyotype of normal male goat.png
(Bos primigenius)
60 20100516 Vacas Vilarromarís, Oroso-8-1.jpg Karyotype of cattle.PNG
American bison
(Bison bison)
60 American bison k5680-1.jpg
Bengal fox
(Vulpes bengalensis)
60 Indianfox.jpg
Gypsy moth
(Lymantria dispar dispar)
62 Lymantria dispar MHNT Fronton Male.jpg
(Equus africanus asinus)
62 Donkey 1 arp 750px.jpg
Scarlet macaw
(Ara macao)
62-64 Scarlet Macaw (Ara macao) -Panama-8a.jpg Karyotype of Scarlet Macaw (Ara macao).png [89]
Mule 63 Juancito.jpg semi-infertile (odd number of chromosomes - between donkey (62) and horse (64) makes meiosis much more difficult)
Guinea pig
(Cavia porcellus)
64 Two adult Guinea Pigs (Cavia porcellus).jpg G-banded karyotype of female guinea pig (Cavia porcellus).png
Spotted skunk
(Spilogale x)
64 Spilogale gracilis.jpg
(Equus ferus caballus)
64 LaMirage body07.jpg Karyotype of male Marajoara Horse (Equus Caballus).png
Fennec fox
(Vulpes zerda)
64 Fennec Foxes.jpg [54]
Echidna 63/64 Ameisenigel.jpg 63 (X1Y1X2Y2X3Y3X4Y4X5, male) and 64 (X1X1X2X2X3X3X4X4X5X5, female)[90]
(Chinchilla lanigera)
64 Chinchilla lanigera.jpg [56]
Nine-banded armadillo
(Dasypus novemcinctus)
64 Nine-banded Armadillo.jpg Karyotype of nine-banded armadillo.png [91]
Gray fox
(Urocyon cinereoargenteus)
66 Urocyon cinereoargenteus.jpg [54]
Red deer
(Cervus elaphus)
68 Zoo-Dortmund-IMG 5549-a.jpg
Elk (Wapiti)
(Cervus canadensis)
68 Cervus elaphus Luc Viatour 3.jpg
Roadside hawk
(Rupornis magnirostris)
68 Buteo magnirostris -Goias -Brazil-8.jpg Karyotype of roadside hawk (Rupornis magnirostris).png [92]
White-tailed deer
(Odocoileus virginianus)
70 Cervus canadensis2006.jpg
Black nightshade
(Solanum nigrum)
72 Solanum nigra bgiu.jpg [93]
Bat-eared fox
(Otocyon megalotis)
72 Otocyon megalotis (Namibia).jpg [54]
Sun bear
(Helarctos malayanus)
74 Sitting sun bear.jpg
Sloth bear
(Melursus ursinus)
74 Sloth Bear Washington DC.JPG
Polar bear
(Ursus maritimus)
74 Polar Bear - Alaska.jpg
Brown bear
(Ursus arctos)
74 Brown bear (Ursus arctos arctos) running.jpg
Asiatic black bear
(Ursus thibetanus)
74 Kragenbär.jpg
American black bear
(Ursus americanus)
74 Ursus americanus sequoia forest 2003-09-21.jpg
Maned wolf
(Chrysocyon brachyurus)
76 Chrysocyon.brachyurus.jpg
Gray wolf
(Canis lupus)
78 Canis lupus 265b.jpg
Golden jackal
(Canis aureus)
78 Golden wolf sa02.jpg [54]
78 Rock dove - natures pics.jpg Based on African collared dove [94]
(Canis lupus familiaris)
78 Boddhi the mixed-breed dog.jpg Karyotype of Dog (Canis lupus familiaris).png Normal dog karyotype is composed of 38 pairs of acrocentric autosomes and two metacentric sex chromosomes.[95][96] [97]
(Canis lupus dingo)
78 Canis lupus dingo - cleland wildlife park.JPG [54]
(Cuon alpinus)
78 Cuon.alpinus-cut.jpg
(Canis latrans)
78 Coyote by Rebecca Richardson.jpg [54]
(Gallus gallus domesticus)
78 Female pair.jpg Karyotype of chicken (Gallus gallus).png
African wild dog
(Lycaon pictus)
78 Lycaon pictus (Temminck, 1820).jpg [54]
Tropical pitcher plant
(Nepenthes rafflesiana)
78 Pahangraff3.jpg [33]
80 Wild turkey eastern us.jpg [98]
(Saccharum officinarum)
80 Cut sugarcane.jpg Karyotype of Sugarcane (Saccharum officinarum LA Purple).png This is for S. officinarum (octoploid, 2n = 8× = 80).[99] About 70% of the world’s sugar comes from this species.[100] Other species in the genus Saccharum, collectively known as sugarcane, have chromosome numbers in the range 2n=40-128.[101] [99]
80 Paloma en la Ciudad de México.JPG [102]
Great white shark
(Carcharodon carcharias)
82 Carcharodon carcharias.jpg [103]
Hedgehog genus Erinaceus (woodland hedgehogs) 88 Erinaceus europeaus (DarkAn9el).jpg
90 Botrychium-4.jpg
Hedgehog Genus Atelerix (African hedgehogs) 90 Igel01.jpg
Grape fern
90 Botrychium multifidum.jpg
Pittier's crab-eating rat
(Ichthyomys pittieri)
92 Previously thought to be the highest number in mammals, tied with Anotomys leander. [104]
(Penaeus semisulcatus)
86–92 Penaeus monodon.jpg [105]
Aquatic rat
(Anotomys leander)
92 Previously thought to be the highest number in mammals, tied with Ichthyomys pittieri. [104]
Kamraj (fern)
(Helminthostachys zeylanica)
94 Helminthostachys zeylanica.jpg
(Carassius carassius)
100 Cyprinus carpio.jpeg Karyotype of crucian carp (Carassius carassius).png [106]
Red viscacha rat
(Tympanoctomys barrerae)
102 Tympanoctomys barrerae.jpg Metaphase spread of the Viscacha rat (Tympanoctomys barrerae).jpg Highest number known in mammals, thought to be a tetraploid[107] or allotetraploid.[108] [109]
Walking catfish
(Clarias batrachus)
104 Clarias batrachus.jpg Karyotype of walking catfish (Clarias batrachus).png [110]
American paddlefish
(Polyodon spathula)
120 Paddlefish underwater.jpeg Karyotype of North American paddlefish (Polyodon spathula).png [111]
Northern lamprey
174 Petromyzon marinus2.jpg [112]
Rattlesnake fern
(Botrypus virginianus)
184 Botrychium virginianum.JPG [113]
Red king crab
(Paralithodes camtschaticus)
208 Paralithodes camtschaticus,.jpg
Field horsetail
(Equisetum arvense)
216 Equisetum arvense foliage.jpg
240 Ophioglossum closeup.jpg n=120–720 with a high degree of polyploidization[114] n=720 in hexaploid species O. reticulatum. A google book search for "ophioglossum reticulatum chromosomes" returns values of 2n=768 and 2n=1260, though these sources may be wp:circular and unreliable.
Agrodiaetus butterfly
(Agrodiaetus shahrami)
268 This insect has one of the highest chromosome numbers among all animals. [115]
Black mulberry
(Morus nigra)
308 Morus-nigra.JPG In this case, the chromosome number is docosaploid, or 22 times the basic number. [116]
Atlas blue
(Polyommatus atlantica)
448-452 PolyommatusAtlanticaMMUpUnAC1.jpg Karyotype of Atlas blue (Polyommatus atlanticus).png 2n = circa 448-452. Highest number of chromosomes in the non-polyploid eukaryotic organisms.[117] [117]
Ciliated protozoa
(Tetrahymena thermophila)
10 (in micronucleus) Tetrahymena thermophila.png 50x = 12,500 (in macronucleus, except minichromosomes)
10,000x = 10,000 (macronuclear minichromosomes)[118]
Ciliated protozoa
(Oxytricha trifallax)
15,600 MAC chromosomes × 1900 ploidy level =
29.64 × 106 chromosomes
Oxytricha trifallax.jpg Macronuclear "nanochromosomes"; ampliploid. [119][120][121]

See also[edit]


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