growth/size/body
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• at P12, body weights of mutants are slightly less than wild-type; from 3 weeks onward, body weights are significantly lower
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behavior/neurological
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• ataxia manifests by postnatal day 12 and worsens after that point; hindlimbs are more affected than hindlimbs
• hesitant, joggling gait is displayed
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• mice display faulty coordination of the hind legs
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• mice have difficulty maintaining normal posture; writhing of the trunk during walking is observed
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nervous system
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• at P21, cerebellum weights of homozygotes are significantly lower than wild-type; ratio of cerebellar to brain weight is lower in mutants from 3 weeks to 5 months of age
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cellular
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• cerebellar cortex of mutants displays many dead cells from P12 to 5 months of age
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