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Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. [10] These complications commonly include infertility and small, poorly functioning testicles (if present). These symptoms are often noticed only at puberty, although this is one of the most common chromosomal disorders, occurring in ...
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. Females typically have two X chromosomes ...
Normal life expectancy [2] Frequency. ~1 in 1,000 males [1] XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] There are usually few symptoms. [2]
1 in 85,000 to 100,000. 49,XXXXY syndrome is an extremely rare aneuploidic sex chromosomal abnormality. It occurs in approximately 1 out of 85,000 to 100,000 males. [1][2][3] This syndrome is the result of maternal non-disjunction during both meiosis I and II. [4] It was first diagnosed in 1960 and was coined Fraccaro syndrome after the researcher.
Henry Turner. Turner syndrome (TS), also known as 45,X, or 45,X0, is a genetic disorder in which the patient's cells have only one X chromosome or are partially missing an X chromosome (sex chromosome monosomy) leading to the complete or partial deletion of the pseudoautosomal regions (PAR1, PAR2) in the affected X chromosome. [2][6][7] Most ...
48,XXXY syndrome [1] XXXY syndrome is a genetic condition characterized by a sex chromosome aneuploidy, where individuals have two extra X chromosomes. [2] People in most cases have two sex chromosomes: an X and a Y or two X chromosomes. The presence of one Y chromosome with a functioning SRY gene causes the expression of genes that determine ...
XXY (Klinefelter syndrome) XYY (Jacobs syndrome) Compared to trisomy of the autosomal chromosomes, trisomy of the sex chromosomes normally has less severe consequences. Individuals may show few or no symptoms and have a normal life expectancy. [4]
Organisation Intersex International Australia has quoted research showing pregnancy termination rates of up to 88% in 47,XXY even while the World Health Organization describes the trait as "compatible with normal life expectancy", and "often undiagnosed".