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Articles
Sex Chromatin in Newborns: Presumptive Evidence for External Factors in Human Nondisjunction
1 Departments of Biophysics and Pediatrics, University of Colorado Medical Center, Denver 80220
An incidence of 0.6 percent of sex-chromosome aberrations in newborns was found during a 5-month period, while no aberrations occurred in similar populations before and after this period. Down's syndrome also exhibited an elevated frequency during this same critical interval. A severe rubella epidemic may have influenced this pattern.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)