• 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...
    49 KB (5,728 words) - 02:36, 25 May 2025
  • 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 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 (1,761 words) - 15:40, 28 March 2025
  • Thumbnail for Barr body
    translocation of the X inactivation complex on the X chromosome to an autosome. Mammalian X-chromosome inactivation is initiated from the X inactivation centre or...
    30 KB (3,341 words) - 14:40, 23 May 2025
  • 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) - 14:00, 23 May 2025
  • 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) - 03:28, 25 May 2025
  • 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 (4,242 words) - 14:36, 11 March 2025
  • 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 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...
    16 KB (1,676 words) - 09:38, 25 April 2025
  • Sex linkage (redirect from X-linked)
    of a female's X-chromosomes, inactivation preferentially targets X-chromosomes inherited from a single parent, thus the remaining active X-chromosomes from...
    91 KB (9,943 words) - 19:09, 22 May 2025
  • 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 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...
    49 KB (5,056 words) - 03:37, 27 May 2025
  • 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 (2,204 words) - 19:01, 21 May 2025
  • 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
  • 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 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 (1,059 words) - 01:01, 26 November 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...
    18 KB (2,107 words) - 19:29, 25 May 2025
  • 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)...
    59 KB (6,788 words) - 15:06, 25 May 2025
  • different markings for their X inactivation. Through histone methylation, there is genetic imprinting, so that the same X homolog stays inactivated through...
    24 KB (2,883 words) - 13:03, 23 May 2025
  • 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) - 20:40, 8 January 2025
  • autosomal imprinting and X chromosome inactivation. With contemporaries that included Mary Lyon FRS (who discovered X chromosome inactivation), Bruce’s research...
    11 KB (1,092 words) - 14:33, 23 May 2025
  • 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 (6,908 words) - 21:11, 28 April 2025
  • 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...
    43 KB (3,981 words) - 09:57, 13 March 2025
  • 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 (393 words) - 16:49, 27 November 2024
  • Thumbnail for X-linked myotubular myopathy
    a female with a X-linked recessive abnormality to have clinical symptoms: one is a manifesting carrier and the other is X-inactivation. A manifesting carrier...
    4 KB (355 words) - 12:55, 14 January 2024
  • Thumbnail for Edith Heard
    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 (2,126 words) - 01:48, 26 May 2025
  • 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...
    18 KB (1,777 words) - 19:26, 24 May 2025
  • Medical Institute Investigator. She is known for her work on X-chromosome inactivation and for discovering the functions of a new class of epigenetic...
    14 KB (1,441 words) - 02:28, 6 November 2024
  • Thumbnail for Neil Brockdorff
    His interests are in the molecular basis of X-inactivation, the process that evolved in mammals to equalise X chromosome gene expression levels in XX females...
    8 KB (685 words) - 20:02, 26 January 2025
  • Thumbnail for XY sex-determination system
    in females, with two X chromosomes, undergo X-inactivation, in which one of the two X chromosomes is inactivated. The inactivated X chromosome remains within...
    31 KB (3,557 words) - 18:21, 21 May 2025