- trisomy 13
The condition of having three copies of chromosome 13 that results in a syndrome characterized by mental retardation and defects to the central nervous system and heart.
* * *also called Patau's Syndrome,human chromosomal disorder that results from an extra (third) copy of chromosome (chromosome number) 13. Infants born with this disorder have profound mental retardation and severe developmental malformations that include a small head, a cleft palate and lip, tiny eyes and eye openings, extra digits on hands and feet (polydactyly), clenched fingers, central nervous system abnormalities, and defects in many internal organs. There is no cure for this disorder, and most infants die in the first few months of life. The only treatment is general supportive care. Trisomy 13 is quite rare, occurring in only one out of 20,000 live births. Its incidence increases in the offspring of women and men over the age of 32.
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Trisomy 9 — is a chromosomal disorder caused by having three copies (trisomy) of chromosome number 9. It can appear with or without mosaicism. ymptomsSymptoms vary, but usually result in dysmorphisms in the skull, nervous system, and mental retardation.… … Wikipedia
Trisomy 16 — is a chromosomal abnormality in which there are three copies of chromosome 16 rather than two. [cite web|author=Mary Kugler, R.N. |date=2005 08 20 |url=http://rarediseases.about.com/od/chrosomedisorders/a/082104.htm |title=Chromosome 16 Disorders … Wikipedia
trisomy 13 — thər(t) tēn n a congenital condition that is characterized esp. by usu. severe mental retardation and by craniofacial, cardiac, ocular, and cerebral abnormalities, is caused by trisomy of the human chromosome numbered 13, and is typically fatal… … Medical dictionary
trisomy 18 — ā(t) tēn n a congenital condition that is characterized esp. by mental retardation and by craniofacial, cardiac, gastrointestinal, and genitourinary abnormalities, is caused by trisomy of the human chromosome numbered 18, and is typically fatal… … Medical dictionary
trisomy — trisomy. См. трисомия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
trisomy 21 — n. See Down syndrome. * * * … Universalium
trisomy 21 — twent ē wən n DOWN SYNDROME … Medical dictionary
trisomy — 1930, from trisomic (1921), from TRI (Cf. tri ) + ending from CHROMOSOME (Cf. chromosome) … Etymology dictionary
Trisomy — ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D014314A trisomy is a form of aneuploidy with the presence of three copies, instead of the normal two, of a particular chromosome.cite web… … Wikipedia
trisomy-21 — Down syndrome Down syn drome, Down s syndrome Down s syn drome, n. (Med.) A congenital disorder caused by an extra chromosome 21 in some or all cells. It causes a variable number and degree of abnormalities, including retarded growth, mental… … The Collaborative International Dictionary of English