provides biologists with a system for discussing, comparing and contrasting living forms
A system of organising data.
the science of classifying organisms into different catagories
one of the first steps of science; defingin the units of study
how many animal species are classified today?
about 2 million
A system of naming species that uses a double name such as Homo sapiens. The first name alone names the genus; both names used together name the species
A two-part name given to a species; the first mane is also the name of the genus. ex. Homo Sapiens.
A group of closley related species.
The divine plan or blueprint for a species or a higher taxonomic catagory.
no two in the animal kingdom have the same name
allways appears with the generic name
specific name (species)
allways underlined or italisized
binomen (genus and species)
year of Systema Naturae
A group of organisms at any level of the taxonomic hirearchy.
the major taxa 2
the higher taxa 5
Taxa above the genus level, such as family, order, class, phylum, and kingdom
Major division of an order, consisting of closely related genera.
Major division of a class, consisting of closely related families.
Major division of phylum consisting of closely related orders
Major division of kingdom consisting of closely related classes.
Major division of domain consisting of closely related phyla
Major division of life consisting of closely related kingdoms.
as we go higher in the hirearchy each succeding level is defined by more
a. generalized characteristics
b. specific characteristics
a. generalized characteristics
in the higher taxa, species have
characteristics in common
How many living species are there in the genus Homo?
1 - Homo sapiens
three extinct genera in the family Hominidea...
monkeys and prosimians and the family Hominidae belong to what order?
primates belong to what class?
the class Mammaila, birds, reptiles, fish, and amphibians belong to what phylum?
The chaorates and all other animal forms belong to what kingdom?
animals, plants and fungi belong to what domain?
three prefixes used to create additional levels
additional taxon that groups genera and divides subfamly
On what basis are species classified into higher taxonomic levels?
Classification of Homo sapiens?
if several genera are related to each other they have a...
The evolutionary history of a population or taxon.
Similarities due to inheritance from a common ancestor.
homologies (homologous features)
what is a flipper an eleboration of?
the basic structure of the forelimb of a four-footed land vertebrate
Referring to similarities that are not homologous. It can arise from parallelism, convergence, analogy, and chance.
Nonhomologous similarities in different evolutionary lines.
the Tasmanian wolf is a...
the grey wolf and sperm whale are both...
Marsupials must have diverged from the mammalian line before or after the evolution of the placenta?
Homoplastic similarities found related species that did not exist in the common ancestor; however, the common ancestor provided initial commonalities that gave direction to the evolution of the similarities.
Old and New world monkeys exemplify homoplastic similarities arising from what process?
Similarities between the Tasmanian wolf and the grey wolf result from...
Structures that are superficially similar and serve similar functions but have no common evolutionary relationship.
The wings of a butterfly, wings of a bird, and the wings of a bat are what kind of structures?