Table 5. The AT- and GC-content of perfect SSRs in the bovid genomes.

Repeat type		B. taurus		B. mutus		Bu. bubalis		O. aries		C. hircus		P. hodgsonii
		Length (bp)	%	Length (bp)	%	Length (bp)	%	Length (bp)	%	Length (bp)	%	Length (bp)	%
Mono-	A + T	5,316,524 a	97.40 b	4,561,708	98.03	4,896,840	97.66	4,169,777	92.06	4,179,314	94.54	3,978,869	95.98
	C + G	141,690	2.60	91,589	1.97	117,258	2.34	359,513	7.94	241,579	5.46	166,445	4.02
Di-	A + T	2,704,043	65.64	2,243,219	64.01	2,443,975	63.14	2,351,017	63.24	2,227,712	62.59	2,250,023	62.90
	C + G	1,415,455	34.36	1,261,045	35.99	1,426,813	36.86	1,366,875	36.76	1,331,518	37.41	1,327,365	37.10
Tri-	A + T	860,866	40.11	801,886	40.71	845,173	40.42	715,424	42.31	704,848	42.68	703,524	42.21
	C + G	1,285,508	59.89	1,167,953	59.29	1,245,725	59.58	975,508	57.69	946,589	57.32	963,021	57.79
Tetra-	A + T	645,977	72.44	583,242	73.07	673,707	72.93	673,996	73.68	667,142	74.03	730,252	74.86
	C + G	245,743	27.56	214,914	26.93	250,101	27.07	240,760	26.32	233,990	25.97	245,272	25.14
Penta-	A + T	973,912	60.68	893,455	60.93	985,454	61.36	926,318	61.42	948,015	61.25	941,497	61.42
	C+ G	630,973	39.32	572,950	39.07	620676	38.64	581,747	38.58	599,765	38.75	591,298	38.58
Hexa-	A + T	27,274	54.97	19,755	62.20	29,055	57.75	31,488	61.00	32,319	59.88	23,257	57.94
	C + G	22,340	45.03	12,003	37.80	21,255	42.25	20,130	39.00	21,657	40.12	16,883	42.06
Total	A + T	10,528,596	73.78	9,103,265	73.27	9,874,204	72.84	8,868,020	71.44	8,759,350	72.19	8,627,422	72.27
	C + G	3,741,709	26.22	3,320,454	26.73	3,681,828	27.16	3,544,533	28.56	3,375,098	27.81	3,310,284	27.73

^a The numbers of nucleotides in SSRs are listed. For example: the total of the mononucleotide SSRs is 5,458,214 bp, of which 5,316,524 bp have A+T and 141,690 bp have C+G.

^b For each repeat type, the percent of A + T and C + G are shown.