Table 1.

Distribution of the CentC Satellite and CRM Elements among Different Centromeres in Maize

Chromosome	n	Left Flanking CRM (kb)a	Central Domain (kb)b	Right Flanking CRM (kb)a	Full Size (μm)	Full Size (kb)c	CentC (%)	CRM (%)d
1	8	ND	≥1720	ND	≥535	≥1720	70.4 ± 3.9	29.6 ± 3.9
2	18	≥34 ± 20	282 ± 15	≥69 ± 29	≥121 ± 11	≥388 ± 34	70.6 ± 3.7	29.4 ± 3.7
3	25	≥52 ± 9	241 ± 24	≥6 ± 3	≥93 ± 9	≥299 ± 29	60.7 ± 5.4	39.3 ± 5.4
4	10	≥114 ± 38	265 ± 27	≥164 ± 45	≥166 ± 23	≥533 ± 74	40.0 ± 7.1	60.0 ± 7.1
6	12	≥76 ± 28	351 ± 41	≥52 ± 25	≥147 ± 17	≥471 ± 81	42.8 ± 6.4	57.2 ± 6.4
7	8	ND	≥2830	ND	≥882	≥2830	73.6 ± 4.9	26.4 ± 4.9
9	9	≥34 ± 8	515 ± 82	≥160 ± 29	≥221 ± 15	≥709 ± 47	48.4 ± 4.7	51.6 ± 4.7

^aThe end of the flanking CRM domains cannot be determined unambiguously. We used the most characteristic CRM signals at each end for the measurements that represent the minimum sizes of these flanking domains. ND, no data.

^bThe size of the core domain of centromeres 1 and 7 cannot be determined. The longest fiber-FISH signals were used as the minimum sizes of these domains.

^cThe lengths of the fiber-FISH signals (μm) were converted to kilobases using a 3.21-kb/μm conversion rate (Cheng et al., 2002a).

^dThe percentage of the CentC and CRM sequences are relative to each other without including the unknown sequences in the centromeres.