Most diploid organisms have polyploid ancestors. The evolutionary process of
polyploidization is poorly understood but has frequently been conjectured to involve some …

Ploidy-variable species allow direct inference of the effects of chromosome copy number on
fundamental evolutionary processes. While an abundance of theoretical work suggests …

Whole-genome duplication resulting from polyploidy is ubiquitous in the evolutionary history
of plant species. Yet, polyploids must overcome the meiotic challenge of pairing …

Polyploidy is an example of instantaneous speciation when it involves the formation of a
new cytotype that is incompatible with the parental species. Because new polyploid …

Allopolyploidy is a significant evolutionary process, resulting in new species with diploid or
greater chromosome complements derived from two or more progenitor species. We …

During evolution successful allopolyploids must overcome 'genome shock'between
hybridizing species but the underlying process remains elusive. Here, we report concerted …

Whole-genome duplication, which leads to polyploidy, has been implicated in speciation
and biological novelty. In plants, many species exhibit ploidy variation, which is likely …

Background Allotetraploids carry pairs of diverged homoeologs for most genes. With the
genome doubled in size, the number of putative interactions is enormous. This poses …

Although allopolyploids are common in nature and in agriculture, knowledge of their origin,
evolution and genomic regulation is limited. We study synthetic allotetraploids of …

Highlights•Current estimates of Arabidopsis polyploid origins point to recent glacial
maxima.•Arabidopsis polyploids might have selective advantages in challenging …