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Alex Widmer

Researcher at ETH Zurich

Publications -  180
Citations -  9678

Alex Widmer is an academic researcher from ETH Zurich. The author has contributed to research in topics: Population & Silene latifolia. The author has an hindex of 53, co-authored 169 publications receiving 8643 citations. Previous affiliations of Alex Widmer include Indiana University & École Polytechnique Fédérale de Lausanne.

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Orchid diversity: an evolutionary consequence of deception?

TL;DR: It is argued that pollination by deceit is one of the keys to orchid floral and species diversity and a better understanding of its evolutionary consequences could help evolutionary biologists to unravel the reasons for the evolutionary success of orchids.
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The genetic architecture necessary for transgressive segregation is common in both natural and domesticated populations

TL;DR: The results indicate that transgressive segregation provides a general mechanism for the production of extreme phenotypes at both above and below the species level and testify to the possible creative part of hybridization in adaptive evolution and speciation.
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Evolution of reproductive isolation in plants.

TL;DR: Plant species are typically isolated not by a single factor, but by a large number of different pre- and postzygotic barriers, and their potentially complex interactions, and this phenomenon has often been ignored to date.
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Glacial refugia: sanctuaries for allelic richness, but not for gene diversity

TL;DR: A more complex situation in the European beech Fagus sylvatica is demonstrated, for which some measures of genetic diversity are higher in newly colonized areas than in refugia.