Table 1. The penetrant rate for gross and behavioral abnormalities of Turner mice.

Phenotype	# of animals* (total 33 mice from Tur/+ x Tur/+ matings
	8 (24.4%)	17 (51.5%)	8 (24.4%)
Abnormal Preyer reflex response:
7 weeks old	0	12 (weaker, 70.6%)	8 (no response, 100%)
Reduced pinna size:
Bilateral reduction	0	0	0
Unilateral reduction	0	0	0
Circling response:
5 weeks old	0	2 (11.8%)	8 (100%)
7 weeks old	0	17 (100%)	8 (100%)
Headtossing:
5 weeks old	0	0	8 (100%)
7 weeks old	0	12 (mild, 70.6%)	8 (severe, 100%)
Abnormal reaching response:
7 weeks old		12 (70.6%)	8 (100%)

* Animals that exhibited headtossing also failed in reaching response, exhibited circling behavior and have an abnormal Preyer reflex.