Table 3.

Genetic distances estimated with CRIMAP for a data set of 6448 SNPs

Chromosome	Ovine Genome V3.1. Physical size (Mb)	N. of SNPs	Genetic size in cM (Maddox [30])	Genetic size in cM (estimated)	cM/Mb
OAR1	275	675	341	323	1.17
OAR2	249	598	308	292	1.17
OAR3	224	575	321	273	1.22
OAR4	119	321	129	155	1.30
OAR5	107	285	153	152	1.43
OAR6	116	303	155	144	1.24
OAR7	100	281	134	137	1.37
OAR8	90	243	125	124	1.38
OAR9	94	261	126	126	1.34
OAR10	86	202	100	116	1.34
OAR11	62	173	119	110	1.78
OAR12	77	206	94	112	1.45
OAR13	83	241	132	130	1.56
OAR14	62	167	116	118	1.90
OAR15	80	190	109	110	1.37
OAR16	71	205	81	87	1.22
OAR17	72	196	121	114	1.59
OAR18	69	187	120	115	1.68
OAR19	60	177	75	108	1.81
OAR20	51	159	81	86	1.70
OAR21	49	113	74	79	1.60
OAR22	50	149	85	83	1.67
OAR23	62	160	76	90	1.45
OAR24	42	113	89	84	2.01
OAR25	45	133	69	77	1.72
OAR26	44	135	70	76	1.75
TOTAL	2439	6448	3403	3421	1.51

The physical size in Mb of a chromosome is given by the last SNP position on the Ovine Genome V3.1. The ratio cM/Mb represents the updated genetic size in cM, estimated per chromosome, divided by the size in Mb. Correlation between the physical size per chromosome and the ratio cM/Mb is strongly negative, −0.7