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Table 1.

Observed Numbers of Boundary Intron Phase Combinations of Class 1 Domains (Encoded by One Exon) and Class 2 Domains (Encoded by Several Exons) in Human Genes

Comb.[i]		Domain class 1		Domain class 2
Comb.[i]		Domain	Domain family	Domain	Domain family
0–0	29	8.5	176	51
1–1	257	24.3	298	32.6
2–2	2	0.2	30	8.7
0–1	11	6.9	82	19.1
0–2	9	4.4	74	23.7
1–2	8	0.6	50	13.7
1–0	6	3.1	103	21.9
2–0	2	3	63	17.6
2–1	21	4.9	48	7.6
Total	345	56	924	196

[i] Combination of flanking intron phases.