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Pedigree Chart X linked Recessive Disorders

Characteristics of Sex (X) linked Recessive Trait
  • More  males than  females are affected.
  • Affected sons are usually born to unaffected mother; thus  the trait skip generations.
  • A carrier( heterozygous) mother produces approximately 1/2 affected sons.
  • Is never passed from father to son.
  • All daughters of affected fathers are carriers.

Pedigree chart of sex linked recessive disorder
Examples of Sex linked Recessive Disorder

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