First Pedigree

The following pedigree presents you with the inheritance pattern of a trait within a family. Use the interrelationships between the affected family members to determine what type of inheritance is followed by this trait.

Please choose the option which best describes the inheritance pattern of the highlighted trait (magenta color) in the above family pedigree.

1. Autosomal Dominant Inheritance
2. Autosomal Recessive Inheritance
3. Mitochondrial Inheritance
4. X-linked Inheritance - Please note that affected fathers pass this trait to their sons. Also, this trait is never expressed in female family members. Please RETURN to the First Pedigree assessment.
5. Y-linked Inheritance