classification

• Carl Linnaeus 1700s

  classified according to characteristics

  first divided into their kingdom and then smaller groups
• Linnaen System

  Kingdom

  Phylum

  Class

  Order

  Family

  Genus

  Species
• biochemical processes taking place inside organisms developed and microscopes improved, scientists forward new modules of classification
• Carl Woese 1990

  proposed 3 domain system

  used new chemical analysis techniques
• Carl Woese

  ARCHAE - organisms in this domain are primitive bacteria and often found in extreme places such as hot springs and salt lakes

  BACTERIA - contains true bacteria like E.coli and have lots of biochemical differences compared to archae

  EUKARYOTA - broad range of organisms including fungi, plants, animals and protsist

  
  

  these are then subdivided into smaller groups using old classification system
• Binomial System


  first part refers to the genus that the organism belongs to giving info about the ancestry

  second part refers to the species

  Homo - genus

  Sapien - species
• evolutionary trees


  show common ancestors and relations between species