BIO 3102 : Slide 2- Organizing the living world words.doc
Document Summary
Adaptive radiation / derived character/trait- cluster of closely related species that are each adaptively specialized to a specific habitat or food source. Advanced traits (came later, not a primitive condition). Some trait that is not an ancestral trait. Advanced characters- a derived character that is a new version of a trait found in the most recent common ancestor of a group. Analogous- similar function, but different evolutionary origins (wings on a bat and bird). Apomorphy / apomorphies- derived characters that are within a group. Artificial taxonomy- aristotle breaks folk taxonomy by writing things down, causing lists to be made by combining them with other list, creating many more ways to categorize things. Autoapomorphy- a derived trait that is unique to a given group. Camera eye- a lens that projects an image on a surface. Occurs in two places, the octopods, and the fish and all their predecessors.
