Lecture 1 - Systematics and Evolution Flashcards
All life exhibits variations in?
Characters or character states
Concerned with identifying, describing, naming, and classifying species. C. Linnaeus
Taxonomy
Study of biological diversity and its classifications. C. Darwin
Systematics
Systematics employs taxonomy and evolutionary biology to arrange organisms that reflect _______
Phylogeny
Unranked classification groups in systematics are called?
Clades
In taxonomy, concerned with what is this unknown specimen/organism
Identification
In taxonomy, concerned with what makes the organism new to science
Description
In taxonomy, concerned with naming the species
Nomenclature
In taxonomy, concerned with which taxonomic groups a species belongs to
Classification
In taxonomy, concerned with the validity of the current classification given all available evidence
Revision
Tools for Identification (6)
- Taxonomic Keys
- Field Guides
- Written descriptions
- Specimen comparison
- Image comparison
- Expert determination
DNA Barcoding is a powerful tool for identification but what is its main limitation?
It requires the species in question to have already been barcoded in the past AND have that barcode in the database
Tool used to show the groupings of organisms based on their taxonomy and evolutionary biology reflecting _______
Phylogeny; Phylogenetic Tree