classification Flashcards
what is a binomial system
a system of naming species in which each species has two names : a generic name and a specific epithet
what is a taxonomy
the study and practice of naming and classifying species and groups of species within the hierarchal classification scheme
what is biological classification
the organisation of living and extinct organisms into systematic grouse based on similarities and differences between species
what is hierarchal classification
the arrangement of organisms into groups of different rank. The lowest rank is the species; similar species are grouped together into the next rank, which is genus.
This continues to the highest rank which is the domain. which groups many diverse species together
what is a taxonomic rank
any level within the hierarchal classification, for example domain, kingdom, phylum, class, order, family, genus, and species
what is a taxon
a group of organisms at any rank in there hierarchal classification scheme, for example any names specie, or any group such as mammals and plants at higher taxonomic ranks
what is the taxonomic rank
domain kingdom phylum class order family genus species
what are the three domains
bacteria
archaea
Eukarya
what are the five kingdoms
prokaryota protoctist Fungi plantea animalia
what is the domain bacteria
prokaryotic cells
what is the domain Archaea
prokaryotic cells
what Is the domain Eukarya
eukaryotic cells
what is homology
the existence of shared fear that are inherited from a common ancestor. The shared features may not be used for the same function; for example, bat wings and human arms are homologous structures because they have the same pattern of bones, but they are used in different ways
what is phylogeny
the evolutionary history of nay particular taxon
what are the ways in which molecular evidence is used in classification
- use of antibodies, to detect similarities between the proteins in blood plasma of different species
- protein sequencing, looking at the order of amino acids and how similar they are
- DNA hybridisation, used to measure the similarities between DNA of different species
- DNA sequencing, similar to protein sequencing as it is looking at the codes for which orders the order of AA, produces a lot more detail than PS
- databases