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Table 2.

Assymetric distribution of LINEs on the two DNA strands

Region	Species	Length (kb)	Gene orientation	LINE+	LINE−	χ²	P
Xpctgene	human	147	−	47	20	10.88	<1%
	mouse	117	+	11	51	25.81	<1%
intergene	human	186	intergene	31	63	10.89	<1%
Xpct-Cnbp2	mouse	69		6	11	1.47	ns
intergene	human	26	intergene	1	4	1.80	ns
Cnbp2-Ftx	mouse	7		2	0	2.00	ns
Ftxgene	human	14	+	2	6	2.00	ns
	mouse	16	+	1	3	1.00	ns
intergene	bovine	62	intergene	63	20	22.28	<1%
Ftx-Jpx	human	425		70	192	56.81	<1%
	mouse	114		9	13	0.73	ns
Jpxgene	bovine	16	−	22	4	12.46	<1%
	human	68	−	49	30	4.57	<5%
	mouse	9	−	2	0	2.00	ns
intergene	bovine	38	intergene	5	13	3.56	ns
Jpx-Xist	human	95		32	58	7.51	<1%
	mouse	10		0	2	2.00	ns
Xistgene	bovine	35	+	0	7	7.00	<1%
	human	32	+	0	8	8.00	<1%
	mouse	23	+	0	0	nd
intergene	bovine	82	intergene	49	31	4.05	<5%
Xist-Tsx	human	38		7	3	1.60	ns
(Tsixgene)	mouse	35	−	14	3	7.12	<1%
Tsxgene	human	44	− (pseudo)	26	4	16.13	<1%
	mouse	10	−	2	1	0.33	ns
intergene	human	70	intergene	31	7	15.16	<1%
Tsx-Chicl	mouse	25		1	1	0.00	ns
Chiclgene	human	157	−	61	36	6.44	<5%
	mouse	32	−	8	5	0.69	ns
intergene	human	gap	intergene	nd	nd	nd
Chicl-Cdx4	mouse	27		1	18	15.21	<1%
Cdx4-gene	human	7	−	0	1	1.00	ns
	mouse	8	−	1	0	1.00	ns
intergeneCdx4-NapIl2	human	193	intergene	47	84	10.45	<1%
intergene	mouse	77	intergene	10	42	19.69	<1%
Cdx4-Ppnx
Ppnxgene	mouse	74	+	1	36	33.11	<1%

[i] LINE+, number of LINEs on the direct strand; LINE−, number of LINEs on the complementary strand. P; probability, ns; not significant, nd; not done.