Summary
Instances of balanced Robertsonian translocations between the homologues of chromosome 21 were observed in two couples with a history of repeated abortions. The male partner of one couple and the female partner of another couple exhibited this anomaly. The translocation (21q21q) was found to be transmitted to their live children with Down's syndrome.
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Sudha, T., Gopinath, P.M. Homologous Robertsonian translocation (21q21q) and abortions. Hum Genet 85, 253–255 (1990). https://doi.org/10.1007/BF00193208
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DOI: https://doi.org/10.1007/BF00193208