What is the definition of a trait and a derived trait?
1) A trait is something shared with the last common ancestor, while a derived trait is something new to a specific species.
2) A trait is something new to a specific species, while a derived trait is something shared with the last common ancestor.
3) A trait is something shared with the last common ancestor, while a derived trait is something shared with all species.
4) A trait is something new to a specific species, while a derived trait is something new to all species.