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Coincidentally, sometimes a missing or extra sex chromosome
is detected in amniocentesis or chorionic villus sampling to detect Down's syndrome. However, parents are unlikely to know anything about
sex chromosome anomalies, and usually depend on health professionals to
provide them with information. Before being seen by a clinical geneticist they will probably discuss the diagnosis with a doctor or
midwife who may know little about these conditions. Abramsky et al
(p 463) interviewed 29 staff who had recently informed parents about
sex chromosome anomalies. There was wide variation between health
professionals in what they knew, thought, and told parents about these
conditions. Questionnaires completed by parents confirmed this.