cellular
• loss of imprinting of ubiquitously imprinted genes when the Kcnq1ot1 allele is inherited paternally
• no alteration of imprinting status when the Kcnq1ot1 allele is inherited maternally
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growth/size/body
• at 4 weeks of age when the Kcnq1ot1 allele is inherited maternally
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