Fourth 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 determine the genotypes of family members, and 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 - Please note that affected parents do not have affected children in this family (grey arrow). If the trait was recessive, then these affected parents would be homozygous recessive; all of their children would be homozygous recessive, and all of their children would express the trait. Please RETURN to the Fourth Pedigree assessment.
3. Mitochondrial Inheritance
4. X-linked Inheritance
5. Y-linked Inheritance