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1 April 2000 BALANCING SELECTION ON A FLORAL POLYMORPHISM
Banu Subramaniam, Mark D. Rausher
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Abstract

The common morning glory, Ipomoea purpurea, exhibits a flower color polymorphism at the W locus throughout the southeastern North America. The W locus controls whether flowers will be darkly pigmented (WW), lightly pigmented (Ww), or white with pigmented rays (ww). In this report, we describe results of a perturbation, or convergence, experiment using five plots designed to determine whether balancing selection operates on the W locus. The pattern of gene frequency changes obtained are indicative of balancing selection operating at the W locus, providing direct evidence that both the alleles are actively maintained by selection.

Corresponding Editor: D. Pi;tznero

Banu Subramaniam and Mark D. Rausher "BALANCING SELECTION ON A FLORAL POLYMORPHISM," Evolution 54(2), 691-695, (1 April 2000). https://doi.org/10.1554/0014-3820(2000)054[0691:BSOAFP]2.0.CO;2
Received: 24 November 1998; Accepted: 1 August 1999; Published: 1 April 2000
JOURNAL ARTICLE
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KEYWORDS
balancing selection
frequency-dependent selection
Ipomoea
morning glory
polymorphism
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