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While you develop callused feet when you go barefoot for a summer, your neighbor remains a tenderfoot by protecting her feet with shoes. The differences in skin toughness between you and your neighbor are best attributed to .A) the molecular structure of genes. B) person-to-person genetic variations. C) the impact of epigenetic marks on gene expression. D) the interaction of genetic and environmental influences
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While you develop callused feet when you go barefoot for a summer, your neighbor remains a tenderfoo...
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