Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Phylogeny of Tetraploid Catostomid Fishes Based on the Loss of Duplicate Gene Expression

Stephen D. Ferris and Gregory S. Whitt
Systematic Zoology
Vol. 27, No. 2 (Jun., 1978), pp. 189-206
DOI: 10.2307/2412971
Stable URL: http://www.jstor.org/stable/2412971
Page Count: 18
  • Download ($42.00)
  • Cite this Item
Phylogeny of Tetraploid Catostomid Fishes Based on the Loss of Duplicate Gene Expression
Preview not available

Abstract

A distinctive property of polyploids, the loss of duplicate gene expression over time, allows phylogenetic inferences to be drawn from multilocus isozyme data. Once the "loss" of a duplicate gene expression has begun, soon after polyploidization, primitive and derived character states are clearly defined, though not immune to errors in coding. Even with a relatively small number of characters, cladistic, and phenetic trees may be constructed which are similar to each other and to those based on morphology. The Wagner method is shown to be a particularly appropriate method of analysis for handling gene duplication data. Comparison of patristic and phenetic distances has revealed little homoplasy for species in closely related genera of catostomid fishes, but increasing homoplasy for comparisons between more divergent taxa. With increasing employment of isozyme technology, and the concomitant increase in the number of characters it should be possible to analyze many other polyploid taxa with this cladistic technique.

Page Thumbnails

  • Thumbnail: Page 
189
    189
  • Thumbnail: Page 
190
    190
  • Thumbnail: Page 
191
    191
  • Thumbnail: Page 
192
    192
  • Thumbnail: Page 
193
    193
  • Thumbnail: Page 
194
    194
  • Thumbnail: Page 
195
    195
  • Thumbnail: Page 
196
    196
  • Thumbnail: Page 
197
    197
  • Thumbnail: Page 
198
    198
  • Thumbnail: Page 
199
    199
  • Thumbnail: Page 
200
    200
  • Thumbnail: Page 
201
    201
  • Thumbnail: Page 
202
    202
  • Thumbnail: Page 
203
    203
  • Thumbnail: Page 
204
    204
  • Thumbnail: Page 
205
    205
  • Thumbnail: Page 
206
    206