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Abstract Detail


Population Genetics

Levin, Donald A. [1], Meyers, Lauren A. [2].

Why is polyploidy so rampant in flowering plants?

Several genetical and ecological explanations have been offered to explain the abundance of polyploids in angiosperms. We propose that polyploids constitute a significant majority of all species because of a simple ratcheting process that is not based on genetic nor ecological advantage. The distributions of ploidal levels within a large number of genera are statistically similar to those generated by a simple model that includes irreversible polyploidy. Ploidal levels may increase even though there is some fitness loss.


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1 - University of Texas Austin, Section of Integrative Biology, 1 University Station, C0930, Austin, Texas, 78712, USA
2 - University of Texas, Section of Integrative Biology, 1 University Station, C0930, Austin, Texas, 78712, USA

Keywords:
polyploidy
evolution.

Presentation Type: Oral Paper:Papers for Topics
Session: CP36
Location: Williford A/Hilton
Date: Tuesday, July 10th, 2007
Time: 4:15 PM
Number: CP36018
Abstract ID:1233


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