Table 1.

Number of wild-type (+/+), heterozygous (+/—) and homozygous (—/—) Tbx2tm1Pa embryos collected postnatally and prenatally between 8.5-18.5 dpc from heterozygous intercross matings on mixed 129/C57/ICR and pure 129 backgrounds

Genetic backgroundAge (dpc)+/++/——/—Empty decidua
PostnatalMixed3-4 weeks38680
PrenatalMixed8.58640
9.593185748
10.551116530
11.53882262
12.52666261
13.551671
14.5-18.52149280
Total24252021812
1299.582291
10.56635
11.5101841
12.561190
14.51542
Total3162299