Table 3.

Counts and Percentages of Genic vs. Intergenic Sequences for Non-AT-Rich and AT-Rich Perfect Loopless Inverted Repeats from Size 4 bp to 25 bp in Chromosomes III and X

Length	Non-AT-Rich				AT-Rich
genic	% genic	intergenic	% intergenic	genic	% genic	intergenic	% intergenic
a. Chromosome III
4	101986	49	107454	51	132454	44	166315	56
5	170671	49	179055	51	116919	43	153498	57
6	35749	49	36731	51	35258	42	48209	58
7	56782	47	62779	53	30219	42	41066	58
8	11985	47	13287	53	9148	43	12206	57
9	17769	45	21757	55	7517	44	9741	56
10	4157	44	5210	56	2692	42	3734	58
11	5941	44	7494	56	2279	43	3077	57
12	1457	42	2020	58	898	42	1253	58
13	2203	43	2960	57	846	43	1144	57
14	610	40	899	60	408	43	531	57
15	781	42	1063	58	328	43	427	57
16	270	45	327	55	156	39	246	61
17	244	39	386	61	125	42	174	58
18	79	36	138	64	71	36	128	64
19	96	38	160	63	46	45	56	55
20	44	41	64	59	36	31	80	69
21	34	32	72	68	13	33	27	68
22	13	21	48	79	14	22	50	78
23	13	30	30	70	2	50	2	50
24	26	60	17	40	10	23	34	77
25	7	44	9	56	1	25	3	75
b. Chromosome X
4	191546	42	265782	58	205155	34	395292	66
5	327528	41	473331	59	167322	33	333276	67
6	66200	40	97509	60	50884	33	105333	67
7	103472	40	158151	60	41155	32	86530	68
8	21744	39	34537	61	13774	32	29074	68
9	31800	38	51586	62	10329	32	22314	68
10	7222	37	12109	63	4312	32	9040	68
11	9845	36	17230	64	2828	32	5982	68
12	2450	36	4310	64	1711	32	3628	68
13	3104	34	6084	66	854	32	1783	68
14	870	34	1680	66	924	33	1913	67
15	1006	32	2100	68	253	31	561	69
16	291	31	651	69	659	34	1273	66
17	337	31	766	69	94	35	173	65
18	120	29	292	71	519	35	965	65
19	139	31	307	69	28	33	58	67
20	61	27	161	73	438	36	786	64
21	52	33	107	67	11	46	13	54
22	32	26	93	74	386	37	671	63
23	21	35	39	65	2	33	4	67
24	19	26	55	74	342	37	587	63
25	8	32	17	68	1	33	2	67

For lengths greater than 25 bp, low sample size prevents simple extrapolation of trends. Note that proportionally less of chromosome III is comprised of intergenic sequences and therefore the two chromosomes are not strictly comparable.