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Property Organism Value Units ID Details
Number of Ebola virus species Ebola virus 5 species 111116 Radzimanowski J, Effantin G...
Increase in density of neurons in cortex of females compared with males Human Homo sapiens ~4,000 neurons/mm^3 higher in the female than in the male 115166 Haug H. Brain sizes, surfaces...
Decline in oocyte population in fetal ovary between 5th month of gestation and birth Human Homo sapiens 65 % 105640 Hilscher W. Some remarks...
Pseudogenes Human Homo sapiens 2081 Genes 101482 http://www.ensembl.o...
Age of viable bacteria extracted from amber Bacteria Micrococcus luteus 34,000 to170,000 Years 106140 Greenblatt CL, Baum J...
Relative brain weight Human Homo sapiens 2-2.5 Percent 104074 Amazing numbers in biology...
Macroscopic viscosity of the cytoplasm ηm Bacteria Escherichia coli 17.5 Paхsec 108527 Kalwarczyk T, Tabaka M...
Ratio between mass specific brain and skin metabolic rates Human Homo sapiens 37 (Table - link) unitless 105788 Leslie C. Aiello and...
Brain weight of Eurasian pygmy shrew (Sorex minutus) and sperm whale (Physeter macrocephalus) Mammals Sorex minutus 0.25: Physeter macrocephalus 9,000 grams 115167 Haug H. Brain sizes, surfaces...
Fraction of cerebellum out of brain by volume [largest volume fraction of the cerebellum of all mammals] African Elephant Loxodonta africana ~30 % 115168 Haug H. Brain sizes, surfaces...
Brain weight, encephalization quotient and number of cortical neurons in selected mammals Mammals Table - link N/A 106135 Roth G, Dicke U. Evolution...
Degree of variability in macroscopic sizes of brain and cortex and in microscopic neuronal sizes Human Homo sapiens 15 - 20 % above and below the mean 115165 Haug H. Brain sizes, surfaces...
Increase in recombination rate in female compared to male Human Homo sapiens 1.7 Fold 105921 Petkov PM, Broman KW...
Fraction of Alzheimer's disease (AD) cases that are due to genetic mutations responsible for abnormal Amyloid-beta (Aβ) elevation and deposition in the brain Human Homo sapiens ~5 % 114384 Lauretti E, Iuliano L...
Number of pseudogenes vertebrates chicken 51: mouse 14,000: rat 18,755: human 19,000 pseudogenes 110284 Gregory TR. Synergy between...
Recently originated de novo genes discovered in diverse eukaryotic lineages Eukaryotes Table - link N/A 116990 McLysaght A, Guerzoni...
Predicted number of neurons in elephant brains if they scaled according to rodent cellular scaling rules Elephant sp. 2.3e+10 (Table - link) neurons 109426 Herculano-Houzel S. The...
Substitution rate per synonymous site Bacteria Escherichia coli 4.5E-09 (Table - link) Substitutions/year 105030 Ochman H, Elwyn S, Moran...
Base substitution transcription error rate Nematode Caenorhabditis elegans ~4e-6 misincorporations/site 110503 Gout JF, Thomas WK, Smith Z...
Fraction of Insertions-by-duplication out of all insertions in natural genomes Eukaryotes ~2/3 (approximately two-thirds) unitless 111536 Kipnis Y, Dellus-Gur E...