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  2. Klinefelter syndrome - Wikipedia

    en.wikipedia.org/wiki/Klinefelter_syndrome

    Klinefelter syndrome. 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 ...

  3. XXYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XXYY_syndrome

    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 ...

  4. List of intersex people - Wikipedia

    en.wikipedia.org/wiki/List_of_intersex_people

    Bobby Joe Long, a U.S. serial killer with Klinefelter syndrome. Ricardo López, a Uruguayan-American with Klinefelter syndrome who stalked and attempted to murder Icelandic singer Björk in 1996. Small Luk, intersex activist living in Hong Kong, founder of Beyond the Boundary – Knowing and Concerns Intersex [25]

  5. Harry Klinefelter - Wikipedia

    en.wikipedia.org/wiki/Harry_Klinefelter

    University of Virginia. Known for. Klinefelter syndrome. Scientific career. Fields. Rheumatology, endocrinology. Harry Fitch Klinefelter Jr. (/ ˈklaɪnfɛltər /; March 20, 1912 – February 20, 1990) was an American rheumatologist and endocrinologist. Klinefelter syndrome is named after him.

  6. XXXXY syndrome - Wikipedia

    en.wikipedia.org/wiki/XXXXY_syndrome

    It can be considered a form or variant of Klinefelter syndrome (47,XXY). [11] Individuals with this syndrome are typically mosaic, being 49,XXXXY/48, XXXX. [4] It is genetic but not hereditary, meaning that while the genes of the parents cause the syndrome, there is a small chance of more than one child having the syndrome.

  7. Disorders of sex development - Wikipedia

    en.wikipedia.org/wiki/Disorders_of_sex_development

    This includes patients with Turner Syndrome (45,X or 45,X0) and Klinefelter Syndrome (47,XXY) even though they do not generally present with atypical genitals. XX, Sex reversal: consist of two groups of patients with male phenotypes, the first with translocated Sex-determining region Y protein (SRY) and the second with no SRY gene.

  8. XXXYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XXXYY_syndrome

    XXXYY syndrome, also known as 49,XXXYY, is a chromosomal disorder in which a male has three copies of the X chromosome and two copies of the Y chromosome. XXXYY syndrome is exceptionally rare, with only eight recorded cases. Little is known about its presentation, but associated characteristics include intellectual disability, anomalies of the ...

  9. Male infertility - Wikipedia

    en.wikipedia.org/wiki/Male_infertility

    A variation of Klinefelter syndrome is when some cells in an individual have the extra X chromosome but others do not, referred to as mosaic Klinefelter syndrome. The reduction of testosterone in the male body normally results in an overall decrease in the production of viable sperm for these individuals thereby forcing them to turn to ...

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