A trisomy is a type of polysomy in which there are three instances of a particular chromosome, instead of the normal two. A trisomy is a type of aneuploidy...

Trisomy X, also known as triple X syndrome and characterized by the karyotype 47,XXX, is a chromosome disorder in which a female has an extra copy of...

Trisomy 18, also known as Edwards syndrome, is a genetic disorder caused by the presence of a third copy of all or part of chromosome 18. Many parts of...

Full trisomy 9 is a rare and fatal chromosomal disorder caused by having three copies (trisomy) of chromosome number 9. It can be a viable condition if...

syndrome (United Kingdom and other English-speaking nations), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third...

contains a full extra copy of chromosome 13 (a disorder known as trisomy 13 or trisomy D or T13), or because each cell contains an extra partial copy of...

Trisomy 16 is a chromosomal abnormality in which there are 3 copies of chromosome 16 rather than two. It is the most common autosomal trisomy leading...

births. Trisomy 18 (Edwards syndrome) affects 1 in 6,000 births, and trisomy 13 (Patau syndrome) affects 1 in 10,000 births. 10% of infants with trisomy 18...

Trisomy 8 causes Warkany syndrome 2, a human chromosomal disorder caused by having three copies (trisomy) of chromosome 8. It can appear with or without...

Trisomy 22 is a chromosomal disorder in which three copies of chromosome 22 are present rather than two. It is a frequent cause of spontaneous abortion...

of an extra copy of genetic material on chromosome 21, either in whole (trisomy 21) or part (such as due to translocations). The effects of the extra copy...

autosomal trisomies compatible with live birth, other than Down syndrome (trisomy 21), are Edwards syndrome (trisomy 18) and Patau syndrome (trisomy 13). Complete...

Distal trisomy 10 is a rare chromosomal disorder that causes several physical defects and intellectual disability. Humans, like all sexually reproducing...

cases, the placenta senesces. Triploidy must be distinguished from trisomy 13 and trisomy 18, which may appear similar on sonography. Genetic testing allows...

in some cases, heart problems and seizures. The diagnosis of partial trisomy 15q can be made prenatally or postnatally. The method used for precise...

can screen is trisomy 21 (Down syndrome). In addition to Down syndrome, the triple and quadruple screens assess risk for fetal trisomy 18 also known as...

majority of aneuploid people have trisomy, or three copies of one chromosome.[citation needed] An example of trisomy in humans is Down syndrome, which...

Trisomic rescue (also known as trisomy rescue or trisomy zygote rescue) is a genetic phenomenon in which a fertilized ovum containing three copies of...

Chromosome 2, trisomy 2p Chromosome 2, Trisomy 2p13 p21 Chromosome 2, trisomy 2pter p24 Chromosome 2, trisomy 2q Chromosome 2, trisomy 2q37 Chromosome...

has phenotypic overlap with a number of more common disorders, such as trisomy X and Down syndrome, and diagnosis is usually unclear prior to chromosomal...

very short. Down syndrome, the most common trisomy, usually caused by an extra copy of chromosome 21 (trisomy 21). Characteristics include decreased muscle...

Potocki–Lupski syndrome (PTLS), also known as dup(17)p11.2p11.2 syndrome, trisomy 17p11.2 or duplication 17p11.2 syndrome, is a contiguous gene syndrome...

conditions to be found in such population surveys were Klinefelter's syndrome, trisomy X, and XYY syndrome, rarer conditions such as XYYY syndrome remain little-understood...

chromosome polysomy conditions such as Klinefelter syndrome, XYY syndrome, and trisomy X, is caused by the short-stature homeobox gene on the X and Y chromosomes...

and birth defects, such as spina bifida, cleft palate, Down syndrome, trisomy 18, Tay–Sachs disease, sickle cell anemia, thalassemia, cystic fibrosis...

involves trisomies. Although most forms of trisomy are due to problems in meiosis and affect all cells of the organism, some cases occur where the trisomy occurs...

alcohol syndrome and in Williams syndrome. The chromosomal conditions trisomy 9 and trisomy 21 (Down syndrome) can cause the palpebral fissures to be upslanted...

as a cause of the increased stature seen in all three sex chromosome trisomies: 47,XXX, 47,XXY, and 47,XYY. Severe acne was noted in a very few early...

Common chromosome abnormalities found in miscarriages include an autosomal trisomy (22–32%), monosomy X (5–20%), triploidy (6–8%), tetraploidy (2–4%), or...

including trisomies 1q21.1 duplication syndrome 2q31.1 microduplication Trisomy 8 Trisomy 9 Tetrasomy 9p Distal trisomy 10q Patau syndrome 13 Trisomy 16 16p11...