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Property Organism Value Units ID Details
Number of animals in which the ability to walk on water has independently evolved Metazoa animals >1200 species 116189 Mammola S, Michalik P...
List of non-human animals with publications on their genome projects as of 2012 Metazoa animals Table - link Mb 112712 Luting Song & Wen Wang...
pH of lumen of lysosome Metazoa animals ~4.6 unitless 117092 Haoxing Xu and Dejian Ren...
Divergence between echinoderms and chordates Metazoa animals ~900 million years ago 117101 Pinto MR, Melillo D,...
Fraction of all transcription factors that are homeodomain (HD) proteins Metazoa animals ~15% - 30 % of all transcription factors 116967 Bürglin TR, Affolter...
Diameter of myelinated and unmyelinated axons in central nervous system (CNS) (but size spectra of myelinated and unmyelinated axons overlap considerably) Metazoa animals myelinated 0.2: unmyelinated ≤0.8 µm 114487 Hildebrand C, Remahl S...
Number of microRNA genes conserved across bilaterian animals (value in article is 39, see comments section) Metazoa animals ~41 genes 114542 Fromm et al. A Uniform...
Blood group-active proteins–abundance and function where known Metazoa animals Table - link 10^3 copies/cell 106728 Anstee DJ. The functional...
Composition of myelin Metazoa animals lipids 70 - 80: protein 20 - 30 % 114494 Hildebrand C, Remahl S...
Chronogram for divergence of Bilateria (scroll down below figure to see table) Metazoa animals Table - link million years ago (Ma) 117103 Gregory D. Edgecombe et al....
Divergence of arthropods and priapulids Metazoa animals ~575 million years ago 117102 Peterson KJ, Cotton JA...
Protostome/deuterostome divergence Metazoa animals ~1,000 million years ago 117100 Pinto MR, Melillo D,...
Time octopus and vertebrate eye arose Metazoa animals octopus eye arose ∼480: vertebrate eye arose 640 to 490 million years ago 117181 Fernald RD. Casting a...
Time period over which birds and butterflies have evolved Metazoa animals birds ~160: butterflies >140 million years ago 117177 Frentiu FD, Briscoe AD....
Time when the metazoan toolkit of conserved functional components and processes first arised in evolution Metazoa animals Table - link years ago 117011 Gerhart J, Kirschner...
Number of bacterial species-level and genus-level operational taxonomic units (OTUs) in human and worm & phylotype number in termite Metazoa animals species-level OTUs in human ~1,000: genus-level OTUs in worm 832: phylotypes in termite hindgut 216 OTUs/phylotypes per individual 113942 Shapira M. Gut Microbiotas...
Weight of epithelial cell Metazoa animals ~1 ng 115553 Tomasetti C, Li L, Vogelstein...
Fraction of species known today that have image-forming eyes Metazoa animals ~96 % 117179 Fernald RD. Casting a...
Length of the two extracellular loops of connexins and innexins (invertebrate analogs of the connexins) family Metazoa animals in innexins ~50: in connexins ~30 amino acids 117153 Simonsen KT, Moerman DG...
Number of times eyes evolved independently Metazoa animals 40 times or more 117182 Fernald RD. Casting a...