Table 6. Upper and lower diastema size in wild-type and RSk2-/Y mutant mice with 3 or 4 molars.

	Mean size (mm)	STD	p-value
Mandibular diastema Wild-type	2.99	0.09
Mandibular diastema Mutants with 3 molars	2.83	0.21	0.22
Mandibular diastema Mutants with 4 molars	2.71	0.1	0.26
Maxillary diastema Wild-type	5.45	0.18
Maxillary diastema Mutants with 3 molars	5.33	0.21	0.49
Maxillary diastema Mutants with 4 molars	5.01	0.21	0.0019

Only the upper (maxillary) diastema from mutants with 4 molars was significantly smaller compared to wild-type (bold). STD : standard deviation.