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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:; Molar image, Creative Commons:; Traffic Light image, Creative Commons:; Hemophilia image, Public Domain:; Duchenne Dystrophy image, Public Domain:

Source: Aaron M

Terms to Know
Duchenne Muscular Dystrophy

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

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.


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

Red-Green Color Blindness

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

Sex Chromosome

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