Table 2.

Frequency of occurrence of nitrogenous bases when spacer sequence length between two ACGT palindromes is gradually increased from 5 to 25 nucleotides.

		A	C	G	T	Seq. used	Gap	Count
(ACGT)N5(ACGT)	ACGTGGCT_ACGT	72	42	33	34	72	5	690
(ACGT)N6(ACGT)	ACGTGGCTA_ACGT	98	65	45	44	44	6	611
(ACGT)N7(ACGT)	ACGTGGCTAT_ACGT	92	91	77	80	77	7	824
(ACGT)N8(ACGT)	ACGTGGCTATG_ACGT	97	30	64	55	64	8	852
(ACGT)N9(ACGT)	ACGTGGCTATGG_ACGT	39	32	22	32	32	9	602
(ACGT)N10 (ACGT)	ACGTGGCTATGGC_ACGT	34	36	39	66	39	10	600
(ACGT)N11(ACGT)	ACGTGGCTATGGCG_ACGT	36	23	38	29	38	11	681
(ACGT)N12(ACGT)	ACGTGGCTATGGCGG_ACGT	56	54	65	45	56	12	638
(ACGT)N13(ACGT)	ACGTGGCTATGGCGGA_ACGT	78	50	77	59	77	13	652
(ACGT)N14(ACGT)	ACGTGGCTATGGCGGAG_ACGT	86	53	96	52	53	14	841
(ACGT)N15(ACGT)	ACGTGGCTATGGCGGAGC_ACGT	56	67	44	66	56	15	709
(ACGT)N16(ACGT)	ACGTGGCTATGGCGGAGCA_ACGT	60	34	52	34	60	16	843
(ACGT)N17(ACGT)	ACGTGGCTATGGCGGAGCAA_ACGT	39	41	42	39	42	17	830
(ACGT)N18(ACGT)	ACGTGGCTATGGCGGAGCAAG_ACGT	49	47	58	48	49	18	719
(ACGT)N19(ACGT)	ACGTGGCTATGGCGGAGCAAGA_ACGT	50	38	49	44	44	19	695
(ACGT)N20(ACGT)	ACGTGGCTATGGCGGAGCAAGAT_ACGT	34	30	44	37	37	20	821
(ACGT)N21(ACGT)	ACGTGGCTATGGCGGAGCAAGATT_ACGT	36	40	42	43	40	21	717
(ACGT)N22(ACGT)	ACGTGGCTATGGCGGAGCAAGATTC_ACGT	53	42	42	46	53	22	726
(ACGT)N23(ACGT)	ACGTGGCTATGGCGGAGCAAGATTCA_ACGT	91	55	60	61	55	23	771
(ACGT)N24(ACGT)	ACGTGGCTATGGCGGAGCAAGATTCAC_ACGT	77	64	57	53	53	24	1171
(ACGT)N25(ACGT)	ACGTGGCTATGGCGGAGCAAGATTCACT_ACGT	76	62	58	69	62	25	708