The idea that sex functions to provide variation for natural selection to act upon was first
advocated by August Weismann and it has dominated much discussion on the evolution of …

We are in the midst of a biological revolution. Molecular tools are now providing new means
of critically testing hypotheses and models of microevolution in populations of wild …

Maloids are versatile in reproductive mode-vegetative spreading, self-incompatibility, self-
compatibility, and apomixis all occur-and they engage in extensive hybridization and …

The ability of organisms to produce genetic variation for any trait, including resistance to
pathogens, is partially determined by breeding system. I used enzyme electrophoresis …

The mating system of the Mexican subdioecious columnar cactus, Pachycereus pringlei
(Cardón), was examined by allozyme analysis. Tetrasomic patterns of inheritance were …

Abstract The Arran whitebeams Sorbus arranensis and S. pseudofennica are two endemic
woody plant taxa that have evolved on Arran through hybridisation. S. arranensis is a triploid …

The available data suggest that the population structure of maloid species may be affected
dramatically by features of their breeding system, and by their reproductive ecology in …

The European hawkweed Hieracium pilosella is a successful invader and a troublesome
weed in New Zealand. The systematics of the genus Hieracium is extremely complex and …

The mulga complex (Acacia aneura and closely related taxa) is a widespread group that is
dominant in much of arid Australia. The group is taxonomically difficult, due to a complex …