Table 1.

Detection of AP-2γ mutant embryos at E10.5, E16.5 and E18.5. Genotypes of embryos from crosses between AP-2γ flox/flox females and Sox2Cre gene and AP-2γ null heterozygous males.

Genotype	AP-2γ null/AP-2γ flox No Cre		AP-2γ flox-deleted/+ Sox2Cre		AP-2γ flox/+ No Cre		AP-2γ null/AP-2γflox-deleted Sox2Cre
	Exp	Ob	Exp	Ob	Exp	Ob	Exp	Ob
E 10.5c	17	17	17	19	17	20	17	10
E16.5d	57	67	57	64	57	75	57	22a
E18.5e	32	35	32	36	32	39	32	18b

^a,bχ² test p< 0.01

^c66 embryos

^d228 embryos

^e128 embryos

“+” indicates the presence of a wild type allele