TABLE 3.

Number of MLH1 foci per chromosome arm

		No. of MLH1 foci		Genetic length (cM)	No. of cells containing
Arm	Karyotypea	Mean	SD			0 foci	1 focus	2 foci	3 foci
a	af	2.09	0.50	104.5	3	46	481	108
b	bc	1.72	0.49	86.0	1	188	438	11
c	bc	1.69	0.52	84.5	4	202	418	14
d	de/s, dv	1.83	0.44	91.5	0	128	493	17
f	af	1.14	0.38	57.0	6	534	98	0
g	gm	1.22	0.45	61.0	7	483	147	1
h	hi	1.19	0.43	59.5	11	495	132	0
i	hi	1.09	0.35	54.5	12	556	70	0
j	jl	1.06	0.28	53.0	6	561	44	0
j	j/l	1.04	0.19	52.0	0	26	1	0
k	ko	1.05	0.21	52.5	0	41	2	0
k	k/o	0.94	0.30	47.0	4	48	1	0
k	kq	0.98	0.23	49.0	2	55	1	0
k	k/q	1.06	0.32	53.0	4	143	13	0
k	k	1.06	0.29	53.0	4	299	20	1
l	jl	1.03	0.25	51.5	10	572	29	0
l	j/l	0.96	0.19	48.0	1	26	0	0
m	gm	0.96	0.23	48.0	31	602	5	0
n	no	0.96	0.21	48.0	1	22	0	0
n	n/o	1.00	0.09	50.0	1	222	1	0
n	n	1.00	0.14	50.0	4	383	4	0
o	ko	0.98	0.15	49.0	1	42	0	0
o	k/o	0.91	0.30	45.5	5	48	0	0
o	no	1.00	0.00	50.0	0	23	0	0
o	n/o	0.97	0.17	48.5	7	217	0	0
o	o	0.98	0.15	49.0	6	288	1	0
p	pr	0.94	0.26	47.0	42	593	3	0
q	kq	0.98	0.13	49.0	1	57	0	0
q	k/q	0.96	0.21	48.0	7	153	0	0
q	q	0.97	0.17	48.5	12	407	1	0
r	pr	0.90	0.30	45.0	64	573	1	0
t	tu	0.53	0.50	26.5	297	341	0	0
u	tu	0.54	0.50	27.0	296	342	0	0

^aA karyotype ko will produce a metacentric bivalent, k/o will produce a trivalent (metacentric ko and acrocentrics k and o), and k will produce an acrocentric bivalent. The same is true for other chromosomes. de/s, dv is the sex trivalent.