BioNews - Study shows that 'identical twins' are not genetically identical: If one twin develops schizophrenia it does not mean the other will. This suggests the disease is not purely genetic or that the identical twins might not have the same genes as each other after all.
Molecular geneticist Dr Shiva Singh of the University of Western Ontario's Faculty of Science said in a statement: 'Cells are dividing as we develop and differentiate. More importantly, these cells may lose or acquire additional DNA. The genome is not static. Our results have really forced everyone to rethink the idea that identical twins are actually identical. The implication would be that there is nobody with the [same] human genome sequence, everybody is different'."
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