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Chromosome Disorders

Inheritance patterns and prenatal diagnosis

Inheritance patterns
Many chromosome abnormalities do not recur in families. However, since some abnormalities are due to a balanced chromosomal rearrangement in either parent, a child could display a chromosome disorder. Genetic advice should be sought to quantify the specific risks posed by individual chromosome abnormalities.

Prenatal diagnosis
Chorionic villus sampling (CVS) can be carried out usually around eleven to thirteen weeks of pregnancy and amniocentesis from around fifteen to seventeen weeks of pregnancy.

View Structural abnormalities Structural abnormalities  |  Is there support? View Is there support?

Medical text written October 2001 by Dr B Searle. Approved October 2001 by Professor M A Hultèn. Additional material on small Supernumerary Marker Chromosomes written July 2005 by Dr T Liehr, Institute of Human Genetics and Anthropology, Jena, Germany. Last updated October 2006 by Dr B Searle, Unique - the Rare Chromosome Support Group. Approved October 2006 by Professor M A Hultèn, University of Warwick, Coventry, UK.

 

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