Table 2.

Transmission of premutation or full mutation maternal allele to the offspring.

Maternal allele	Fetus/Newborn allele
	CGG	Change in repeat	Untransmitted
CGG Repeats	Repeats	size	maternal allele
55	61	+6	40
56	56	+0	29
56	63	+7	31
57	57	+0	30
57	57	+0	30
61	61	+0	29
62	72	+10	29
62	81	+19	30
65	66	+1	29
69	245	+176	23
77	276	+199	32
78	83	+5	29
79	78	−1	29
81	200	+119	30
81	282	+201	23
90	280	+190	31
110	277	+167	31
280	283	+3	30