...版的《自然遗传学》（Nature Genetics）期刊曾有科学家指出，复制动物胚胎出现不正常的原因，在于「DNA标记（DNA imprinting）出现混乱。但也有科学家对此持怀疑态度。
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Because we have identical DNA in each of our cells, our bodies have mechanisms, such as DNA methylation, to control which genes are expressed in certain cell types-a process called genomic imprinting.
因为我们每个细胞含有完全相同的DNA，我们机体有许多机制，如DNA甲基化，来控制一定类型细胞的基因表达，该过程称为基因组印迹。
The system of Epigenetics includes DNA methylation, RNA-interfering, genome imprinting and histone code and so on.
表遗传体系包括DNA甲基化、RNA干涉、基因组印迹和组蛋白密码等多方面。
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