Summary
A 46, XX, del(20) (p11) karyotype (Paris Conference, 1971) was identified in an 11-month-old French-Canadian girl with a dysmorphic syndrome, multiple congenital anomalies, psychomotor and growth retardation. Both parents had normal phenotype and karyotype.
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Kalousek, D.K., Thérien, S. Deletion of the short arms of chromosome 20. Hum Genet 34, 89–92 (1976). https://doi.org/10.1007/BF00284443
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DOI: https://doi.org/10.1007/BF00284443