Chromosome loops arising from intrachromosomal tethering of telomeres occur at high frequency in G1 (non-cycling) mitotic cells: Implications for telomere capture

Table 2 Rate of tethering in non-cycling cells at G1 interphase of p (short arm) to q (long arm) subtelomeric signals in single homologues.

Chromosome	Genome of cells	Numbers and [Percentage] of p-q signal pairs** tethered (95% confidence limits)	Numbers and [Percentage] of cells with all p-q signals tethered# (95% confidence limits).
4	Diploid	50/60 [83] (71–91%)	10/14 [72] (42–92%)
5	Diploid	123/148 [83] (76–89%)	26/41 [63] (47–78%)
7	Diploid	86/113 [76] (67–84%)	26/45 [58] (42–72%)
9	Diploid	ND*	ND*
10	Diploid	92/108 [85] (77–91%)	24/35 [69] (51–83%)
17	Diploid	62/76 [82] (71–90%)	13/28 [46] (28–66%)
20	Diploid	72/90 [80] (70–88%)	14/24 [58] (37–78%)
3	Triploid	25/30 [83] (65–94%)	5/10 [50] (19–81%)
6	Triploid	49/61 [80] (68–89%)	12/22 [55] (32–76%)
12	Triploid	57/82 [70] (58–79%)	8/24 [33] (16–55%)
18	Triploid	65/85 [77] (66–85%)	12/28 [43] (25–63%)

ND-not determined. * Cross-hybridization between 9q and 18p prevented analysis.
** p-q subtelomere signal pairs scored, irrespective of cell numbers.
#Separate scoring of discrete cells only; i.e. diploid cells with clearcut tethering of both p (short-arm) to q (long-arm) subtelomere signal pairs and triploid cells with all three p-q subtelomere signal pairs tethered.