Table 1.

Genotypes of progeny from FGFR2+/− crosses

Age	No. with genotype
	+/−	+/+	−/−	Total
Weanling	89	40	—	129
19.5 d.p.c.	10	3	—	13
10.5 d.p.c.	25	8	—	33
8.5 d.p.c.	17	4	—	21
Cultured blastocysts	34	17	12	63