X-Linked Traits and Disorders

X-Linked Traits and Disorders

Author: Aaron Mullally

This lesson will give examples of disorders that are linked to genes on the X chromosome.

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X-Linked Traits

Video Images: X-Link image, Creative commons: http://upload.wikimedia.org/wikipedia/commons/a/a3/XlinkRecessive.jpg; Molar image, Creative Commons: http://commons.wikimedia.org/wiki/File:Labeledmolar.jpg; Traffic Light image, Creative Commons: http://en.wikipedia.org/wiki/File:Modern_British_LED_Traffic_Light.jpg; Hemophilia image, Public Domain: http://en.wikipedia.org/wiki/File:PBB_Protein_F8_image.jpg; Duchenne Dystrophy image, Public Domain: http://en.wikipedia.org/wiki/File:Duchenne-muscular-dystrophy.jpg

Source: Aaron M

  • Sex Chromosome

    The chromosomes that, when paired, determine the sex/gender of the organism, in humans XX = female while XY = male.

  • Hemophilia

    An X-linked recessive disorder that affects the blood's ability to clot.

  • Duchenne Muscular Dystrophy

    An X-linked recessive disorder in which the muscles deteriorate over time.

  • Red-Green Color Blindness

    An X-linked recessive disorder in which a person cannot distinguish between the colors red and green.

  • Faulty Enamel Trait

    A disorder caused by a dominant mutant allele on the X chromosome in which enamel that protects teeth does not properly develop.