Monozygotic twins discordant for trisomy
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Rogers, John G. ;Voullaire, Lucille ;Gold, Hugo ;Opitz, John M.
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Article
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1982
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John Wiley and Sons
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English
β 202 KB
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## Abstract Monochorionic twins were phenotypically discordant for Down syndrome. Chromosome analysis of lymphocytes showed both to be mosaics. Fibroblast chromosome analysis showed that one twin was 46,XY and the other 47,XY, +21. Blood mosaicism appears to have resulted from placental anastomoses