Reproductive isolation (RI) is a core concept in evolutionary biology. It has been the central
focus of speciation research since the modern synthesis and is the basis by which biological …

Sexual selection plays several intricate and complex roles in the related processes of local
adaptation and speciation. In some cases sexual selection can promote these processes …

INTRODUCTION Organisms in the early stages of speciation provide an opportunity to
understand the processes that govern reproductive isolation between taxa. Ecological or …

Understanding the processes of population divergence and speciation remains a core
question in evolutionary biology. For nearly a hundred years evolutionary geneticists have …

Hybrid incompatibilities occur when interactions between opposite ancestry alleles at
different loci reduce the fitness of hybrids. Most work on incompatibilities has focused on …

Speciation often involves the evolution of multiple genetic-based barriers to gene flow
(ie,“coupling”). However, barriers may exhibit a diversity of evolutionary interactions during …

How barriers to gene flow arise and are maintained are key questions in evolutionary
biology. Speciation research has mainly focused on barriers that occur either before mating …

Speciation is a continuous process and analysis of species pairs at different stages of
divergence provides insight into how it unfolds. Previous genomic studies on young species …

Marine environments are inhabited by a broad representation of the tree of life, yet our
understanding of speciation in marine ecosystems is extremely limited compared with …

Introgression, the incorporation of genetic material from one (sub) species into the gene pool
of another by means of hybridization and backcrossing, is a common phenomenon in birds …