Table 3.

Number of reads mapped to randomly selected non-transcribed regions in various tissues from the two monotreme species and the resulting RPKM values.

	tissue	mapped read total for gene	mapped read total	RPKM
echidna	adult ovary	0	54 548 375	0
	adult testis	1	61 299 876	0.003
	adult frontal cortex	0	58 422 726	0
	puggle frontal cortex	1	47 214 854	0.004
	puggle ovary	1	47 923 676	0.004
	puggle testis	0	54 413 890	0
platypus	brain	0	37 686 965	0
	fibroblasts	0	39 841 608	0
	kidney	0	18 380 826	0
	liver	1	38 897 053	0.001
	ovary	0	25 060 266	0
	testes	1	66 530 964	0.001