Get access
Advertisement

AN ANALYSIS OF THE TAXONOMIST'S JUDGMENT OF AFFINITY

Authors


SUMMARY

  • 1The basic idea of affinity as overall similarity, which is logically and historically prior to that of evolutionary affinity, is described. It is in constant use in taxonomy
  • 2After an analysis of the ideas of different forms, the general plan of construction of an organism, similarity in general plan, and the single character, a procedure is worked out which makes precise the judgment of affinity, and enables us to obtain a numerical value for the mean character difference between any two forms
  • 3As a result, it is shown that the family tree diagram can be used only for the evolutionary topology of a group, not for showing amount of evolutionary difference
  • 4A measure of the relevance of a taxonomic comparison is described
  • 5The possibility of giving a quantitative basis to the taxonomic hierarchy is pointed out
Get access to the full text of this article

Ancillary