Taxonomy

1
Chapter 17
2
Taxonomy

• Field of biology concerned with identifying,
  naming, and classifying species
• Somewhat subjective
• Information about species can be interpreted
  differently

3
Binomial System

• Devised by Carl von Linne
• Each species has a two-part Latin name
• First part is generic
• Second part is specific name

4
Higher Taxa

• Kingdom
• Phylum
• Class
• Order
• Family

• Inclusive groupings meant to reflect
  relationships among species

5
Binomial System

• Devised by Carl von Linne
• Each species has a two-part Latin name
• First part is generic
• Second part is specific name

6
Phylogeny

• The scientific study of evolutionary
  relationships among species
• Practical applications
• Allows predictions about the needs or weaknesses
  of one species on the basis of its known
  relationship to another

7
Six-Kingdom Scheme
8
Three-Domain Classification

• Favored by microbiologists

9
A Cladogram
10
Evolutionary Tree of Life

• Relationships between clades or monophyletic
  groups continue to be clarified as a pattern of
  sets within sets