Data from: Incomplete loss of a conserved trait: function, latitudinal cline, and genetic constraints

Anne M. Royer, Colin Kremer, Kola George, Samuel G. Pérez, Douglas W. Schemske & Jeffrey K. Conner
Retention of nonfunctional traits over evolutionary time is puzzling, because the cost of trait production should drive loss. Indeed, several studies have found nonfunctional traits are rapidly eliminated by selection. However, theory suggests that complex genetic interactions and a lack of genetic variance can constrain evolution, including trait loss. In the mustard family Brassicaceae the conserved floral condition includes four long and two short stamens, but we show that short stamens in the highly self-pollinating...
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