Table 1. The table indicated the frequency of wt, heterozygous, and homozygous offspring after heterozygote matings in Ccdc6 knock-in mice.

	heterozygote matings offspring = 198 mice
	N° mice	%
Ccdc6 wt/wt	81	41
Ccdc6 wt/−ex2	95	48
Ccdc6 −ex2/−ex2	22	11