Table 1.

Genotype analysis of progeny from TRAF6 (+/−) intercrosses

StageNumber genotyped (percentage)% TRAF6 (−/−) embryos exhibiting exencephalyTotal number of animals examined at this stage
+/++/−−/−
129J × C57BL6
 E12.54  (18)12  (55)6  (27)1722
 E13.56  (15)19  (48)15  (37)3340
 E14.510  (19)27  (50)17  (31)2354
 E15.515  (27)27  (48)14  (25)2956
 E16.53  (18)7  (41)7  (41)7117
 E17.58  (27)15  (50)7  (23)5730
 P14104  (32)187  (57)36  (11)0327
ICR/CD1
 P1421  (25)46  (55)17  (20)084
C57BL6
 E18.52  (20)6  (60)2  (20)10010
 P141-aWild-type allele = 1508  (5)0158
  • TRAF6 (−/−) animals were derived from timed matings of TRAF6 (+/−) mice, with the morning of the plug designated as E0.5. No exencephaly was observed in TRAF6 (+/−) or (+/+) littermates. P14 represents the number of viable progeny observed at P14 derived from TRAF6 (+/−) mice in the mixed C57BL6 × 129J background or backcrossed more than two times onto either C57BL6 or outbred ICR/CD1 genetic backgrounds.

  • F1-a Indicates the number of animals exhibiting one or more wild-type allele(s) from intercrosses of C57BL6 TRAF6 (+/−) mice.