2. Trisomy 18 - Genetics Home Reference
Trisomy 18, also called Edwards syndrome, is a chromosomal condition associated with severe intellectual disability and abnormalities in many parts of the body. Individuals with trisomy 18 often have a low birth weight; a small,...
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3. Trisomy 18 - References - Genetics Home Reference
Boghosian-Sell L, Mewar R, Harrison W, Shapiro RM, Zackai EH, Carey J, Davis-Keppen L, Hudgins L, Overhauser J. Molecular mapping of the Edwards syndrome phenotype to two noncontiguous regions on chromosome 18. Am J Hum Genet. 1994 Sep;55(3):476-83.
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4. Trisomy - Genetics Home Reference
Trisomy is the presence of an extra chromosome in cells. Down syndrome is an example of a condition caused by trisomy.
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5. Trisomy 13: MedlinePlus Medical Encyclopedia
Trisomy 13 (also called Patau syndrome) is a genetic disorder in which a person has three copies of genetic material from
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6. Trisomy 18
Trisomy 18 is a genetic disorder in which a person has a third copy of genetic material from chromosome 18, instead of the usual two copies.
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7. Trisomy 18
Here is a lateral cleft in a child with multiple congenital anomalies. In this case, the constellation of anomalies suggested a possible chromosomal anomaly, and a karyotype revealed 47, XY, +18 (trisomy 18).
medgen.genetics.utah.edu

8. Trisomy 18 and 13
The term trisomy is used to describe the presence of three chromosomes, rather than the usual pair of chromosomes. For example, if a baby is born with three #21 chromosomes, rather than the usual pair, the baby would be said to have "trisomy 21." ...
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9. Chromosomal Abnormalities: Trisomy 18, Trisomy 13
Trisomy 18 and Trisomy 13 are the only two live born trisomies apart from Down's syndrome. These trisomy disorders tend to have much more severe clinical manifestations than trisomy 21, and only rarely do...
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