| Species | | References |
| Prokaryotes | β | β | βEscherichia coli | 25,000,000 | [192] | Unicellular Eukaryotes | β | β | βParamecium species | 25,000,000β75,000,000 | [193] | βPlasmodium falciparum | 210,000β300,000 | [194] | βSaccharomyces paradoxus | 10,000,000 | [195] | Multicellular Eukaryotes | β | β | βInvertebrates | β | β | βCaenorhabditis elegans | 80,000 | [196] | βCaenorhabditis remanei | 1,600,000 | [197] | βDrosophila melanogaster | 1,150,000 | [198] | βDrosophila simulans | 2,600,000 | [199] | βPlants | β | β | βArabidopsis lyrata | 138,000 | [200] | βArabidopsis thaliana | 127,000 | [200] | βCapsella grandiflora | 500,000 | [201] | βHelianthus annuus | 832,000 | [200] | βHelianthus petiolaris | 733,000 | [200] | European aspen Populus tremula | 118,000β500,000 | [202, 203] | βZea mays | 590,000 | [200] | βVertebrates | β | β | βMus domesticus | 161,000 | [199] | βMus castaneus | 500,000 | [204] | βBonobos | 12,300 | [205] | βChimpanzee | 21,300 | [205] | βHuman | 10,400 | [205] | βGray Whale | 34,410 | [206] |
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