taxonomy Flashcards
taxonomy
the science of classifying all animals dead or alive
(science of systematics)
homologous feature
same evolutionary origin different function
ex: bat and human arm
analogous feature
different origin same feature
ex: bird wings vs butterfly wing
vestigial feature
homologous to a fully functioning structure in a closely related species
what are the 3 domains of life
bacteria
archaea
eukaryotes
what are the taxonomic ranks of classification
kingdom
phylum
class
order
family
genus
species
what is binomial nomenclature
the formal naming system of species
what are the rules of binomial nomenclature
the first word must be capitalized
the second word is not capitalized
both words are written in italics (underlined)
can be abbreviated
what is phylogeny
the history of a species as they change through time
what is a phylogenetic tree
a tree like chart showing the evolutionary relationships among various biological species
what are embryological relationships
animals develop similarly, from embryos
what is a clade
a clade is a group of organisms that includes an ancestor and all descendants of that ancestor
