Not all clones the same

Despite their name, not all clones are created equal. This is especially true for the products of somatic cell nuclear transfer (SCNT), which entails the transplantation of the nucleus from a mature somatic cell, or non-reproductive cell, into an oocyte, or immature female ovum, whose nucleus has been removed. The result is a genomically reprogrammed cell that has been ‘tricked’ into acting like a fertilized egg, and subsequently develops into a clone of the nucleus-donor organism; however, the success rate for this procedure is remarkably low and many of the resulting clones exhibit a spectrum of developmental problems

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