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  2. 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.

  3. XXXYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XXXYY_syndrome

    By that time, three men with XXYY syndrome had been reported. [16] 49,XXXYY was one of the later sex chromosome aneuploidies to be discovered, being preceded by Turner, [17] Klinefelter, [18] and trisomy X [19] in 1959, XXYY syndrome in 1960, [20] and XYY [21] and tetrasomy X [22] in 1961.

  4. Klinefelter syndrome - Wikipedia

    en.wikipedia.org/wiki/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).

  5. XXXY syndrome - Wikipedia

    en.wikipedia.org/wiki/XXXY_syndrome

    People with XXXY syndrome were found to score significantly less in the domains of daily living skills and communication compared to XXYY, and XXY individuals. [3] This means that they typically demonstrate little ability in the domains of self-care, social skills, safety, application of academic skills, and responsibility.

  6. XYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XYY_syndrome

    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 ] These may include being taller than average and an increased risk of learning disabilities .

  7. Sex chromosome anomalies - Wikipedia

    en.wikipedia.org/wiki/Sex_chromosome_anomalies

    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.)

  8. 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.

  9. XYYYY syndrome - Wikipedia

    en.wikipedia.org/wiki/XYYYY_syndrome

    XYYYY syndrome, also known as 49,XYYYY, is an exceptionally rare chromosomal disorder in which a male human has three additional copies of the Y chromosome. Only seven non- mosaic cases of the disorder have ever been recorded in the medical literature, as well as five mosaic cases, of which two had more 48,XYYY than 49,XYYYY cells. [ 1 ]