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  2. X-linked genetic disease - Wikipedia

    en.wikipedia.org/wiki/X-linked_genetic_disease

    X-linked genetic disorders can arise when there is a spontaneous and permanent change in the DNA sequence of an X-linked gene, known as mutation. Traits or diseases caused by X chromosome genes follow X-linked inheritance, the difference between recessive and dominant inheritance affects the probability of an offspring acquiring it from the ...

  3. X-linked recessive inheritance - Wikipedia

    en.wikipedia.org/wiki/X-linked_recessive_inheritance

    X-linked recessive inheritance. X-linked recessive inheritance is a mode of inheritance in which a mutation in a gene on the X chromosome causes the phenotype to be always expressed in males (who are necessarily hemizygous for the gene mutation because they have one X and one Y chromosome) and in females who are homozygous for the gene mutation, see zygosity.

  4. X-linked dominant inheritance - Wikipedia

    en.wikipedia.org/wiki/X-linked_dominant_inheritance

    X-linked dominant traits do not necessarily affect males more than females (unlike X-linked recessive traits). The exact pattern of inheritance varies, depending on whether the father or the mother has the trait of interest. All fathers that are affected by an X-linked dominant disorder will have affected daughters but not affected sons.

  5. Fragile X syndrome - Wikipedia

    en.wikipedia.org/wiki/Fragile_X_syndrome

    Fragile X syndrome (FXS) is a genetic neurodevelopmental disorder characterized by mild-to-moderate intellectual disability. [1] The average IQ in males with FXS is under 55, while about two thirds of affected females are intellectually disabled.

  6. X-linked intellectual disability - Wikipedia

    en.wikipedia.org/wiki/X-linked_intellectual...

    X-linked intellectual disability refers to medical disorders associated with X-linked recessive inheritance that result in intellectual disability. As with most X-linked disorders, males are more heavily affected than females. [1] Females with one affected X chromosome and one normal X chromosome tend to have milder symptoms.

  7. Sex linkage - Wikipedia

    en.wikipedia.org/wiki/Sex_linkage

    Females possessing one X-linked recessive mutation are considered carriers and will generally not manifest clinical symptoms of the disorder, although differences in X chromosome inactivation can lead to varying degrees of clinical expression in carrier females since some cells will express one X allele and some will express the other. All ...

  8. X-linked severe combined immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/X-linked_severe_combined...

    X-linked severe combined immunodeficiency (X-SCID) is an immunodeficiency disorder in which the body produces very few T cells and NK cells. In the absence of T cell help, B cells become defective. [1] It is an X-linked recessive inheritance trait, stemming from a mutated (abnormal) version of the IL2RG gene located on the X-chromosome.

  9. Category:X-linked dominant disorders - Wikipedia

    en.wikipedia.org/wiki/Category:X-linked_dominant...

    Template:X-linked disorders; X-linked hypophosphatemia This page was last edited on 27 July 2013, at 21:10 (UTC). Text is available under the Creative Commons ...