Sex-Linked Traits: Examples and Inheritance Patterns
Common X-Linked Traits
These traits are carried on the X chromosome; males (XY) are more frequently affected because they have only one X.
- Red-green color blindness (deuteranopia, protanopia)
- Hemophilia A & B (factor VIII/IX deficiency)
- X-linked ichthyosis (skin disorder)
- Fragile X syndrome (intellectual disability, behavioral issues)
- Duchenne & Becker muscular dystrophy (progressive muscle weakness)
Females can be carriers; affected females are rare and usually have milder symptoms.
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