Table 1.

Displays the proportion of miRNAs in UCSC known genes, refseq genes and genscan genes for each species

Organism	UCSC known genes	Refseq genes	Genscan genes
A.gambiae			16/37 (43.2%)
C.elegans		20/116 (17.2%)
C.familiaris		1/6 (16.7%)	2/6 (33.3%)
D.melanogaster		21/78 (26.9%)	26/78 (33.3%)
G.gallus		10/147 (6.8%)	81/147 (55.1%)
H.sapiens	166/466 (35.6%)	157/466 (33.7%)	237/466 (50.9%)
M.musculus	129/367 (35.1%)	117/367 (31.9%)	203/367 (55.3%)
P.troglodytes		21/65 (32.3%)	35/65 (53.8%)
R.norvegicus	27/228 (11.8%)	33/228 (14.5%)	117/228 (51.3%)
T.nigroviridis			52/143 (36.4%)