Chapter 26 Flashcards
Taxonomy
A study used to organize species
Systemics
A discipline used to classify species and create phylogenic trees - Look at the fossil records and molecules and genes
Binomial
This is a two part name that every species has. First name is the Genus and the second name is the species
Order of Hierarchical Categories
Domain Kingdom Phylum Class Order Family Genus Species
Clade
A clade is a specific group on a phylogenic tree that has an ancestor and all its descendants
Monophyletic
A group with an ancestor and all of its descendants
Paraphyletic
An ancestor and some but not all of the descendants
Polyphyletic
Includes descendants of different ancestors
Shared Derived Character
Character that did not originate in the ancestor but now is shared by the descendants
Molecular Clock
A way of measuring the absolute time of evolutionary change by looking at genes of different genomes that evolve at the same rate
Three Domains
Bacteria, Archaea and Eukarya
Archaea and Bacteria are more closely related than Eukarya
Kingdoms that have been made obsolete
Monera- made obsolete because it has members fromtwo different domains
Protista- It is polypheletic and contains members closely related to plant, fungi, or animals