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From Embryology
(Down syndrome or trisomy 21 is caused by nondisjunction of chromosome 21 in a parent who is chromosomally normal and is one of the most common chromosomal abnormalities in liveborn children. The frequency of trisomy 21 in the population is approximately 1) |
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Down syndrome or trisomy 21 is caused by nondisjunction of chromosome 21 in a parent who is chromosomally normal and is one of the most common chromosomal abnormalities in liveborn children. The frequency of trisomy 21 in the population is approximately 1 in 650 to 1,000 live births, in Australia between 1991-97 there were 2,358 Trisomy 21 (Down) infants. | Down syndrome or trisomy 21 is caused by nondisjunction of chromosome 21 in a parent who is chromosomally normal and is one of the most common chromosomal abnormalities in liveborn children. The frequency of trisomy 21 in the population is approximately 1 in 650 to 1,000 live births, in Australia between 1991-97 there were 2,358 Trisomy 21 (Down) infants. | ||
Image Source: UNSW Embryology | |||
http://embryology.med.unsw.edu.au/Defect/page21.htm | |||
Revision as of 16:20, 27 July 2009
Down syndrome or trisomy 21 is caused by nondisjunction of chromosome 21 in a parent who is chromosomally normal and is one of the most common chromosomal abnormalities in liveborn children. The frequency of trisomy 21 in the population is approximately 1 in 650 to 1,000 live births, in Australia between 1991-97 there were 2,358 Trisomy 21 (Down) infants.
Image Source: UNSW Embryology http://embryology.med.unsw.edu.au/Defect/page21.htm
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| current | 16:19, 27 July 2009 |  | 480 × 284 (10 KB) | MarkHill (talk | contribs) | Down syndrome or trisomy 21 is caused by nondisjunction of chromosome 21 in a parent who is chromosomally normal and is one of the most common chromosomal abnormalities in liveborn children. The frequency of trisomy 21 in the population is approximately 1 |
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File usage
The following 18 pages use this file:
- 2009 Lecture 2
- 2010 BGD Practical 12 - Abnormalities
- 2010 Lecture 1
- 2010 Lecture 2
- 2011 Lab 12 - Abnormalities
- ANAT2341 Lab 12 - Abnormalities
- Abnormal Development - Genetic
- BGDA Practical 12 - Abnormalities
- Foundations Practical - Critical Periods
- Genetic risk maternal age
- Historic Embryology Vignette
- Lecture - 2011 Course Introduction
- Lecture - 2012 Course Introduction
- Lecture - 2013 Course Introduction
- Lecture - Fertilization
- Trisomy 21
- Talk:2010 BGD Tutorial - Applied Embryology and Teratology
- Template:Trisomy 21 Vignette
