Disruptive selection can lead to the evolution of discrete morphs. We show that particular genetic architectures, in terms of dominance, epistasis, and linkage, are likely to evolve to produce discrete morphs under disruptive selection. Recent genomic studies have revealed that causative mutations tend to cluster, sometimes as a result of chromosomal rearrangements, but we still know little about the molecular mechanisms of dominance and epistasis. Although disruptive selection can also lead to speciation, once an optimal genetic architecture has evolved, disruptive selection no longer promotes the evolution of assortative mating. For a better understanding of the conditions that promote or constrain speciation, it is necessary to address how fast such a genetic architecture can evolve.

【特集】競争と共存の生態学

Abstract. Sexual reproduction has been a central topic in evolutionary biology because of its many costs: why have organisms evolved sexual reproduction de

This is the channel of the seminar series PopBio on the Dark Side. A virtual seminar series covering research on population biology and theoretical ecology from academics in the Asia-Pacific region. W...

NIG is the research institute on genetics. Our mission is to provide infrastructure and opportunities for international collaboration, to train young scientists, and to build new frontiers of life sci...

Research in community ecology has tended to focus on trophic interactions as driving forces of community dynamics, and sexual interactions have often been overlooked. Here we explore how sexual inter...