mortality/aging
• approximately 50% of homozygous mutants died within 24 hours
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behavior/neurological
growth/size/body
• surviving homozygous mutants show significantly reduced growth rates
• culling of non-mutant pups resulted in normal growth rates of mutants, suggesting that reduced growth rate is due to competition with non-mutant littermates
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reproductive system
• in a small sample size, the proportion of infertile females among mutant animals was significantly different from wild-type
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• the number of copulations per male , as well as the number of pregnancies per copulatory event was significantly lower for mutant than for than of non mutants
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