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Trisomy X, also known as triple X syndrome and characterized by the karyotype [note 1] 47,XXX, is a chromosome disorder in which a female has an extra copy of the X chromosome. It is relatively common and occurs in 1 in 1,000 females, but is rarely diagnosed; fewer than 10% of those with the condition know they have it.
Tricho–rhino–phalangeal syndrome; Trigeminal trophic syndrome; Triple X syndrome; Triploid syndrome; Trisomy 8; Tropical splenomegaly syndrome; Trotter's syndrome; Truman Syndrome; Tsukuhara syndrome; Tumor lysis syndrome; Tumor necrosis factor receptor associated periodic syndrome; Turner syndrome; Twiddler's syndrome; Twin Anemia ...
Trisomy 8 (Warkany syndrome 2) Of these, Trisomy 21 and Trisomy 18 are the most common. In rare cases, a fetus with Trisomy 13 can survive, giving rise to Patau syndrome. Autosomal trisomy can be associated with birth defects, intellectual disability and shortened life. Trisomy of sex chromosomes can also occur and include: [4] XXX (Triple X ...
46, XX male syndrome, also known as de la Chapelle syndrome In this list, the karyotype is summarized by the number of chromosomes, followed by the sex chromosomes present in each cell. (In the second and third cases the karyotype varies from cell to cell, while in the last three cases, the genotype is normal but the phenotype is not.)
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child.
Triple X may refer to: Triple X syndrome, a chromosomal abnormality; Triple X (professional wrestling), a former wrestling stable in Total Nonstop Action Wrestling; Triple X ESPN Radio, a trio of sports radio stations in the Washington, D.C. area; Triple X Records, an American record company; WXXX, a radio station in Vermont known as "95 Triple X"
When the repeat is present in an untranslated region, it could affect the expression of the gene in which the repeat is found (ex. fragile X) or many genes through a dominant negative effect (ex. myotonic dystrophy). [citation needed] In order to have a deleterious effect, the number of repeats must cross a certain threshold.
48,XXYY syndrome is a condition related to the X and Y chromosomes (the sex chromosomes). People normally have 46 chromosomes in each cell.Two of the 46 chromosomes, known as X and Y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics.