A patient is diagnosed with color blindness. The nurse realizes this genetic disorder is considered:
1. An X-linked recessive disorder.
2. An X-linked dominant disorder.
3. A chromosomal nondisjunction.
4. A chromosomal deletion.
An X-linked recessive disorder.
Rationale: Color blindness is considered an X-linked recessive disorder. Color blindness is not an X-linked dominant disorder; an example of an X-linked dominant disorder is vitamin D resistance rickets. Chromosomal nondisjunction is the failure of a pair of chromosomes to separate properly during meiosis. Chromosomal deletion is a loss of a chromosome segment or piece.
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