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Nearly normal life expectancy [8] Frequency: ... Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome. [10]
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]
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 ...
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 ...
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.
XXX (Triple X syndrome) 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]
Turner syndrome occurs in between one in 2,000 [4] and one in 5,000 females at birth. [5] All regions of the world and cultures are affected about equally. [9] Generally people with Turner syndrome have a shorter life expectancy, mostly due to heart problems and diabetes. [7] American endocrinologist Henry Turner first described the condition ...
XX male syndrome. XX male syndrome, also known as de la Chapelle syndrome, is a rare intersex condition in which an individual with a 46,XX karyotype develops a male phenotype. [2] Synonyms for XX male syndrome include 46,XX testicular difference of sex development (or 46,XX DSD) [3][4][5][6]