Biology EXAM 1 PT II Flashcards
Direct Observation of Evolution
Natural selection due to induced plant species
Evolution of drug resistant bacteria
Homology
Similarities resulting from common ancestry.
Homologous structures, Vestigial structures
The fossil Record
Shortening Horse Toe
Biogeography
The geographic distribution of species provides proof for evolution.
Convergent Evolution
Distantly related organisms coming up with the same adaptation at the same time independant of each other
Phylogeny
The evolutionary history of a TAXON
The Linnean Heirarchal System
Donkey Kong, Please Come Over For Game Sesh
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Radiant Evolution
Different species developing different adaptations to the sameenvironmental challenge.
Taxon
Unit of classification in systematics based upon anatomical similarities.
Linnean classification system. Not used in Cladistics.
Systematics
Scientific discipline focused on the classfication of organisms into groups based on criteria
THE FATHER OF SYSTEMICS AND TAXONOMY
Carolus Linnaeus
CLADISTICS
An approach to systematics using COMMON ANCESTRY (Phylogeny) as the primary criterion used to classify organisms.
Monophyletic Group
Consists of an ancestor and ALL its descendants
MONO=ONE
Paraphyletic Group
Consists of an ancestor and SOME of its descendants.
PARA=SOME
Polyphyletic Group
Group members have DIFFERENT ancestors
POLY=MANY
