Polyploids—organisms that have multiple sets of chromosomes—are common in certain
plant and animal taxa, and can be surprisingly stable. The evidence that has emerged from …

A critical review of characters used in the systematics of the Brassicaceae is given, and
aspects of the origin, classification, and generic delimitation of the family discussed …

A molecular phylogenetic analysis of the Andean genus Tarasa (Malvaceae) and related
genera yielded unexpected results regarding generic boundaries, the origins of polyploidy …

Polyploidy is a mutation with profound phenotypic consequences and thus hypothesized to
have transformative effects in plant ecology. This is most often considered in the context of …

It has been 10 years since the last review on apomixis, or asexual seed formation, in this
journal (Koltunow, 1993). In that article, emphasis was given to the commonalties known …

Apomixis, asexual reproduction through seeds, has the potential to revolutionize agriculture
if its genetic basis can be elucidated. However, the genetic control of natural apomixis has …

The postgenomics era will bring many changes to ecology and evolution. Information about
genomic sequence and function provides a new foundation for organismal biology. The …

Asexual organisms usually have larger and more northern distributions than their sexual
relatives. This phenomenon, called geographical parthenogenesis, has been controversially …

Apomixis, the asexual production of seed, is a trait estimated to occur in fewer than 1% of
flowering plant species, with an uneven distribution among lineages. In the past decade …

DNA sequence variation of the internal transcribed spacer (ITS) region of nuclear ribosomal
DNA from Arabis holboellii, A. drummondii, and its putative hybrid A. divaricarpa was …