Although intrinsic postzygotic reproductive barriers can play a fundamental role in
speciation, their underlying evolutionary causes are widely debated. One hypothesis is that …

The origins of maize were the topic of vigorous debate for nearly a century, but neither the
current genetic model nor earlier archaeological models account for the totality of available …

The Lemnaceae (duckweeds) are the world's smallest but fastest growing flowering plants,
with a drastically reduced morphology and predominant clonal reproductive habit capable of …

Characterizing the mechanisms that underlie reproductive isolation between diverging
lineages is central in understanding the speciation process. As populations evolve, they …