Table 1  Genotyping of the progeny of Adam22 heterozygous intercrosses.
Adam22 genotype
+/+  +/-  -/-  total
Day 10  16  43  19  78
Day 15  16  43  8  67
Day 20  16  43  0  59
From heterozygous intercrosses, 78 mice were produced. Numbers of mice in each genotype were counted on postnatal day 10, 15 and 20. No homozygotes were survived more than postnatal day 20. +/+, wild-type; +/-, heterozygote; -/-, homozygote.