mortality/aging
• homozygosity causes partial embryonic lethality since heterozygous matings produce only 17.4% homozygous pups instead of 25%
• however, when surviving homozygotes are crossed together or with heterozygotes, a normal litter size and genotype distribution is observed
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nervous system
• a 50% increase in proliferating cells is observed in the dentate gyrus
• however, no defects in memory acquisition or retention are observed
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cardiovascular system
N |
• no changes in heart structure or histology are observed
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• a 12% increase in P-wave duration is noted at 30 weeks of age despite normal P-wave morphology
• however, no differences in the PR, QT, or ST interval length or in the QRS complex duration are observed
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