Zusammenfassung der Ressource
5.4 Cladistics
- Nature of Science
- Falsification of theories with one
theory being superseded by another
- Plant families have been reclassified
as a result of evidence from cladistics
- Reclassification of figwort family
- A clade is a group of organisms that
have evolved from a common ancestor
- Trait can be analogous or homologous
- Cladograms are tree diagram that show the most
probable sequence of divergence in clades
- Cladogram with humans
and other primates
- Analysis of cladograms to deduce
evolutionary relationships
- Classifications of some groups based on
structure did not correspond with the
evolutionary origins of a group or species
- TOK
- Recognition in 1977 by Carl Woese
that Archaea have a separate line of
evolutionary descent from bacteria
- Luria and Mayr objected to his
division of the prokaryotes
- To what extent is conservatism
in science desirable?