X-linked genetic conditions are genetic diseases affecting the sex chromosomes X and Y. They are called "x-linked" or "sex-linked" genetic conditions. (For comparison, non-sex chromosomes 1..22 are called "autosomes" and the resulting conditions called autosomal genetic diseases.)
Recessive diseases are genetic diseases where both copies of a gene must be damaged or mutated. In other words, the genetic error usually needs to be inherited from both parents to get the disease. Inheriting this gene error from only one parent usually causes the person to be a "carrier" of the disease, still having the genetic error, but without any diseases or symptoms.
See also articles Introduction to Genetics and Introduction to Genetic Diseases.
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Book excerpts: Copyright © 2008 Lippincott Williams & Wilkins. All rights reserved.
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Types of X-linked Recessive Genetic Diseases
See full list of 10 Types of X-linked Recessive Genetic Diseases
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