classification Flashcards
grouping carl linnaeus
by characteristics and bone structure
linnaen system
classification
domain
kingdom
phylum
class
order
family
genus
species
binomial naming system
species named by genus and species name ( last two on classification)
only genus name is capitalised and it should all be in italics
why were there new models of classification
technology (like microscopes) improved
allowing us to see more of the internal structures of animals
advantage of classification model
used worldwide so scientists can all use one specific name for species
mostly derived from latin
carl woese
proposed 3 domain system in 1990’s
used evidence gathered from new techniques
-analysed RNA sequences
- found some species were less related than previously thought
introduced 3 new categories called domains (placed above kingdoms)
eukaryota
bacteria
archaea
eukaryota
all organisms that have eukaryotic cells
plants, animals, fungi
bacteria
single celled prokaryotic cells
also known as ‘true bacteria’
archaea
different type of prokaryotic cell
often found in extreme conditions
eg, salt lake, hot springs