Table 2.

Fertility of Snap29 mutant mice

Mating #	Male genotype	Female genotype	Duration of mating	# litters
1	wt	wt	5 months	8
2	wt	wt	5 months	8
3	wt	wt	2 months	4
4	wt	mut	3 months	6
5	wt	mut	4 months	6
6	htz	htz	5 months	13
7	htz	htz	5 months	13
8	htz	htz	3 months	9
9	htz	htz	3 months	9
10	htz	wt	3 months	0
11	htz	mut	3 months	0
12	mut	wt	4 months	0
13	mut	mut	4 months	0
14	mut	wt	4 months	0
15	mut	mut	4 months	0
16	mut	wt	3 months	0
17	mut	mut	3 months	0
18	mut	wt	3 months	0
19	mut	mut	3 months	0