Table 1. Snai3^null/Snai3^null mice are born and survive at the expected Mendelian frequency.

			Genotype
Number of litters	Number of mice	+/+	Snai3null/+	Snai3null/Snai3null
30	201	52 (25.9%)	93 (46.3%)	56 (27.8%)

Snai3^null/+ mice were intercrossed, and progeny genotypes were determined at weaning.