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Property Organism Value Units ID Details
Mutation rates for mitochondrial genome Mammals Orcinus orca 2.6×10^-3 (1.50–3.83×10^-3): mean for mammals 3.3×10^-2: other cetaceans 2.3×10^-3 substitutions/site/million years 112708 Morin PA. et al., Complete...
Number of odorant receptor types Mammals 1000 types 109135 Krieger J, Breer H. Olfactory...
Gross composition of mammalian milk Mammals Table - link N/A 105101 Olav T. Oftedal and Sara...
Divergence rate for protein coding mitochondrial DNA in mammals and birds vertebrates 0.02 substitutions/site/Myr 113217 Peterson GI, Masel J....
Species variation in number of spermatozoa ejaculated and site of deposition in different animals Mammals Table - link N/A 107278 Austin and Short (1982)...
Time between coitus or artificial insemination and arrival of spermatozoa in the Fallopian tube Mammals Table - link Minutes 107279 Austin and Short (1982)...
Estimated fertile life of some mammalian eggs Mammals Table - link Hours 107276 Austin and Short (1982)...
Estimates of the fertile life of spermatozoa in different animals Mammals Table - link Hours 107277 Austin and Short (1982)...
Percentage of 'long lived' proteins that are degraded per hour Mammals 1 to 2 %/hour 108153 Goldberg AL. Protein...
Ratio between number of species of birds and mammals in tropical regions and temperate regions Biosphere 2 Unitless 103929 May RM. How Many Species...
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...
Percent of genes that have more than 10 exons Mammals 50 % 101471 B. Lewin, Genes 9, Oxford...
Average genomic recombination rates Mammals Table - link N/A 107023 Dumont BL, Payseur BA....
Average male chiasma counts per genome per meiosis Mammals Table - link N/A 107024 Dumont BL, Payseur BA....
Heat properties of brown fat cells Mammals average heat power ≤~1nW: bursts of heat delivery 560 pJ N/A 110896 Baffou G, Rigneault H...
Number of neurons in the central nervous system of the common octopus and small mammals such as shrews Eukaryotes ~30,000,000 neurons 109131 Williams RW, Herrup K....
Contribution of the major oxygen-consuming organs of the body to body mass and standard metabolic rate in human and rat Mammals Table - link N/A 106294 Rolfe DF, Brown GC. Cellular...
Comparisons of theory with measurement for scaling powers b in the relation Y∝(mammal mass)^b for quantity Y Mammals Table - link Unitless 107670 Dawson TH. Scaling laws...
Fossil calibration dates Mammals Table - link Myr 112709 Nabholz B, Glemin S,...
Comparison of cytochrome b and multilocus divergence date estimates Mammals Table - link Myr 112710 Nabholz B, Glemin S,...