Constraints on polyploid evolution: a test of the minority cytotype exclusion principle.

Abstract

Polyploid evolution is often considered a mechanism of instant speciation; yet the establishment of rare tetraploids within diploid populations may be constrained by a frequency-dependent mating disadvantage (minority cytotype exclusion principle). I tested this hypothesis using experimental populations of Chamerion angustifolium (Onagraceae) that contained… (More)

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