• Thumbnail for X-inactivation
    (skewed X-inactivation). Unlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally-derived X chromosome...
    48 KB (5,683 words) - 02:41, 21 October 2024
  • Skewed X-chromosome inactivation (skewed X-inactivation) occurs when the X-inactivation of one X chromosome is favored over the other, leading to an uneven...
    27 KB (3,773 words) - 00:09, 27 March 2024
  • Thumbnail for Pentasomy X
    parent. X inactivation is a major factor in pentasomy X. X inactivation is the process through which genes in second (or higher) copies of the X chromosome...
    29 KB (3,393 words) - 18:36, 31 October 2024
  • Thumbnail for X-linked recessive inheritance
    the phenotype, although differences in X-chromosome inactivation (known as skewed X-inactivation) can lead to varying degrees of clinical expression in...
    15 KB (1,754 words) - 13:41, 12 August 2024
  • investigators, that one of the X chromosomes underwent inactivation. In 1961, Mary Lyon proposed the random inactivation of one female X chromosome to explain...
    41 KB (5,094 words) - 03:44, 4 May 2024
  • Thumbnail for Sex linkage
    Sex linkage (redirect from X-linked)
    skewed X-inactivation, in which the normal process of inactivating half of the female body's X chromosomes preferably targets a certain parent's X chromosome...
    10 KB (1,224 words) - 17:40, 12 July 2024
  • Thumbnail for XIST
    XIST (category Genes on human chromosome X)
    that became a pseudogene. The inactive X chromosome is coated with this transcript, which is essential for the inactivation. X chromosomes lacking Xist will...
    34 KB (4,229 words) - 03:34, 9 March 2024
  • Thumbnail for Sex-chromosome dosage compensation
    These include random inactivation of one female X chromosome (as observed in humans and Mus musculus; this is called X-inactivation), a two-fold increase...
    58 KB (7,546 words) - 02:04, 16 October 2024
  • killed RNA interference, also called RNA inactivation, a system that regulates the activity of genes X-inactivation, also called lyonization, a process by...
    398 bytes (89 words) - 18:23, 2 February 2021
  • Thumbnail for Klinefelter syndrome
    mammals with more than one X chromosome, the genes on all but one X chromosome are not expressed; this is known as X inactivation. This happens in XXY males...
    48 KB (4,858 words) - 17:07, 8 November 2024
  • Thumbnail for Mary F. Lyon
    2014) was an English geneticist best known for her discovery of X-chromosome inactivation, an important biological phenomenon. Mary Lyon was born on 15...
    15 KB (1,569 words) - 08:29, 13 September 2024
  • Thumbnail for Tortoiseshell cat
    of X-inactivation, in which one of the X chromosomes is turned off at random in each cell in very early embryonic development. The inactivated X becomes...
    20 KB (2,242 words) - 21:03, 18 November 2024
  • Thumbnail for Barr body
    in the X inactivation process, Xist and Tsix. The centre also appears to be important in chromosome counting: ensuring that random inactivation only takes...
    10 KB (1,144 words) - 11:26, 24 July 2024
  • Thumbnail for Calico cat
    determined the Barr bodies were X chromosomes. In 1961, Mary Lyon proposed the concept of X-inactivation: when one of the two X chromosomes inside a female...
    17 KB (2,024 words) - 10:05, 22 November 2024
  • Thumbnail for X chromosome
    X chromosomes is permanently inactivated in nearly all somatic cells (cells other than egg and sperm cells). This phenomenon is called X-inactivation...
    42 KB (3,912 words) - 07:00, 15 November 2024
  • Thumbnail for Polycomb recruitment in X chromosome inactivation
    X chromosome inactivation (XCI) is the phenomenon that has been selected during the evolution to balance X-linked gene dosage between XX females and XY...
    14 KB (1,609 words) - 13:32, 4 August 2024
  • biology, in particular focussing on X-chromosome inactivation, which occurs when one of the two copies of the X chromosomes in female mammals is inactivated...
    24 KB (2,074 words) - 22:39, 6 November 2024
  • Thumbnail for Trisomy X
    Trisomy X include incomplete X-chromosome inactivation, and corresponding changes to DNA methylation and gene expression across the entire genome. X-inactivation...
    58 KB (6,932 words) - 21:00, 19 September 2024
  • Thumbnail for Fragile X syndrome
    although they are generally less affected than males due to variability in X-inactivation. Large, protruding ears (both) Long face (vertical maxillary excess)...
    60 KB (6,815 words) - 01:58, 22 November 2024
  • different markings for their X inactivation. Through histone methylation, there is genetic imprinting, so that the same X homolog stays inactivated through...
    24 KB (2,879 words) - 12:31, 10 August 2024
  • Thumbnail for XY gonadal dysgenesis
    phenotype is usually similar to Turner syndrome (45,X0) due to a lack of X inactivation. The typical medical treatment is hormone replacement therapy. The syndrome...
    17 KB (1,760 words) - 21:44, 16 October 2024
  • and short stature. X chromosomes in females undergo a process known as X inactivation. X inactivation is when one of the two X chromosomes in females...
    30 KB (2,485 words) - 03:48, 17 September 2024
  • Thumbnail for CC (cat)
    The difference in hair coloration between CC and Rainbow is due to X-inactivation and epigenetic re-programming, which normally occurs in a fertilized...
    5 KB (446 words) - 02:16, 2 November 2024
  • Thumbnail for XX male syndrome
    be dependent on which X chromosome is made inactivate. Typical XX females undergo X inactivation during which one copy of the X chromosome is silenced...
    27 KB (2,978 words) - 22:50, 22 November 2024
  • Thumbnail for ATR-X syndrome
    contain the abnormality. When X-inactivation is skewed, more than 50% of one X chromosome are becoming inactive, and if that X-chromosome is passed to a male...
    10 KB (1,149 words) - 11:06, 22 April 2024
  • Thumbnail for Turner syndrome
    Turner syndrome (redirect from 45,X)
    regions, which are typically spared from X-inactivation. In mosaic individuals, cells with X monosomy (45,X) may occur along with cells that are normal...
    80 KB (9,484 words) - 22:28, 22 November 2024
  • Thumbnail for Tsix
    Tsix (category Genes on human chromosome X)
    X chromosome inactivation. The name Tsix comes from the reverse of Xist, which stands for X-inactive specific transcript. Female mammals have two X chromosomes...
    9 KB (1,148 words) - 17:48, 18 July 2023
  • Thumbnail for Glucose-6-phosphate dehydrogenase deficiency
    deficiency (dependent on the degree of inactivation of the unaffected X chromosome – see Skewed X-inactivation), homozygous females have been described;...
    38 KB (3,970 words) - 13:30, 31 October 2024
  • Thumbnail for Triton X-100
    room temperature, where most virus inactivation steps in biopharmaceutical manufacturing are conducted, both Triton X-100 reduced and Nereid showed similar...
    12 KB (1,229 words) - 08:42, 4 June 2024
  • “escape” X-chromosome inactivation, being expressed from the (otherwise) inactive X chromosome, as well as the molecular characterization of the X-inactivation...
    12 KB (1,363 words) - 18:19, 28 September 2023