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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Preferential expression of the gene depending upon the parent of origin is called
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The correct answer is  Imprinting involves transcriptional silencing of the paternal or maternal copies of ceain genes during gametogenesis. For such genes, only one functional copy exists in the individual. Loss of functional alleles by deletion gives rise to diseases Refer robbins 172