Mimulus guttatus and M. nasutus are an evolutionary and ecological model sister species
pair differentiated by ecology, mating system, and partial reproductive isolation. Despite …

Much evidence has shown that postzygotic reproductive isolation (hybrid inviability or sterility)
evolves by the accumulation of interlocus incompatibilities between diverging populations. …

The evolutionary transition from outcrossing to self‐fertilization has far‐reaching implications
for patterns of intraspecific genetic diversity and the potential for speciation. Using DNA …

Hybrids between flowering plant species often exhibit reduced fitness, including sterility and
inviability. Such hybrid incompatibilities create barriers to genetic exchange that can …

Hybrid incompatibilities play a critical role in the evolution and maintenance of species. We
have discovered a simple genetic incompatibility that causes lethality in hybrids between two …

Incompletely isolated species provide an opportunity to investigate the genetic mechanisms
and evolutionary forces that maintain distinct species in the face of ongoing gene flow. Here, …

Understanding the process by which hybrid incompatibility alleles become established in
natural populations remains a major challenge to evolutionary biology. Previously, we …

In flowering plants, F 1 hybrid seed lethality is a common outcome of crosses between
closely related diploid species, but the genetic basis of this early‐acting and potentially …

The genus Mimulus is a well-studied group of plant species, which has for decades allowed
researchers to address a wide array of fundamental questions in biology (Wu & al., 2008; …

Species are often defined by their ability to interbreed (ie, Biological Species Concept), but
determining how and why reproductive isolation arises between new species can be …