Classification

• What is the purpose of classifying species?

  To organize and understand biodiversity
• How did our ancestors classify species?

  Based on physical appearance
• What is a limitation of using simple names for species?

  They don't indicate evolutionary relationships
• Who proposed the Linnaean system of classification?

  Carl Linnaeus
• What are the main categories in the Linnaean system?

  Kingdom, phylum, class, order, family, genus, species
• In what language are the names in the Linnaean system primarily written?

  Latin
• What is the binomial naming system?

  A system using genus and species names
• How would you write the scientific name for humans?

  Homo sapiens
• What is the significance of italicizing scientific names?

  It distinguishes them from regular text
• How did Carl Woese's classification system differ from Linnaeus's?

  It introduced three domains above kingdoms
• What are the three domains proposed by Carl Woese?

  Eukaryota, bacteria, archaea
• What does the domain Eukaryota include?

  Organisms with eukaryotic cells
• What type of organisms does the domain Bacteria consist of?

  Single-celled prokaryotic organisms
• Where are archaea typically found?

  In extreme conditions like hot springs
• How do evolutionary trees represent species relationships?

  By linking common ancestors
• What does a split in an evolutionary tree indicate?

  A common ancestor splitting into species
• What methods do scientists use to learn about species relationships?

  Comparing structure and DNA
• What mnemonic can help remember the order of classification groups?

  Dear Kate Please Come Over For Great Spaghetti
• What are the main levels of the Linnaean classification system?

  • Kingdom
  • Phylum
  • Class
  • Order
  • Family
  • Genus
  • Species
• What are the strengths of the binomial naming system?

  • Provides clarity in naming species
  • Reduces confusion from common names
  • Facilitates international communication
• What advancements led to new classification models beyond Linnaeus's system?

  • Improved microscopes
  • Analysis of RNA sequences
  • Understanding of evolutionary relationships
• How do evolutionary trees differ in representation?

  • They can vary in structure
  • They show different common ancestors
  • They represent relationships among species