Final answer:
To determine if a mutation is a Y-linked trait from a pedigree analysis, you need to look for a specific pattern in the inheritance of the trait. Y-linked traits are only passed from fathers to sons, as the Y chromosome is inherited exclusively through the paternal line.
Step-by-step explanation:
To determine if a mutation is a Y-linked trait from a pedigree analysis, you need to look for a specific pattern in the inheritance of the trait. Y-linked traits are only passed from fathers to sons, as the Y chromosome is inherited exclusively through the paternal line. Therefore, if a trait is Y-linked, it will appear in all male descendants of a male with the trait, while female descendants will not have the trait. An example of a Y-linked trait in humans is male pattern baldness, where all sons of a bald father will also be bald.