5 documents found, page 1 of 1
In search of the Goldilocks zone for hybrid speciation II: hard times for hybri...
Blanckaert, Alexandre; Sriram, Vedanth; Bank, ClaudiaHybridization opens a unique window for observing speciation mechanisms and is a potential engine of speciation. One controversially discussed outcome of hybridization is homoploid hybrid speciation by reciprocal sorting, where a hybrid population maintains a mixed combination of the parental genetic incompatibilities, preventing further gene exchange between the newly formed population and the two parental sou...
Mutation accumulation opposes polymorphism: supergenes and the curious case of ...
Berdan, Emma L.; Blanckaert, Alexandre; Butlin, Roger K.; Flatt, Thomas; Slotte, Tanja; Wielstra, BenSupergenes offer spectacular examples of long-term balancing selection in nature, but their origin and maintenance remain a mystery. Reduced recombination between arrangements, a critical aspect of many supergenes, protects adaptive multi-trait phenotypes but can lead to mutation accumulation. Mutation accumulation can stabilize the system through the emergence of associative overdominance (AOD), destabilize th...
Unboxing mutations: Connecting mutation types with evolutionary consequences
Berdan, Emma L.; Blanckaert, Alexandre; Slotte, Tanja; Suh, Alexander; Westram, Anja M.; De mendonça fragata almeida, InêsA key step in understanding the genetic basis of different evolutionary outcomes (e.g., adaptation) is to determine the roles played by different mutation types (e.g., SNPs, translocations and inversions). To do this we must simultaneously consider different mutation types in an evolutionary framework. Here, we propose a research framework that directly utilizes the most important characteristics of mutations, ...
In search of the Goldilocks zone for hybrid speciation
Blanckaert, Alexandre; Bank, ClaudiaHybridization has recently gained considerable interest both as a unique opportunity for observing speciation mechanisms and as a potential engine for speciation. The latter remains a controversial topic. It was recently hypothesized that the reciprocal sorting of genetic incompatibilities from parental species could result in hybrid speciation, when the hybrid population maintains a mixed combination of the pa...
Conflict between heterozygote advantage and hybrid incompatibility in haplodipl...
Ghenu, Ana-Hermina; Blanckaert, Alexandre; Butlin, Roger K.; Kulmuni, Jonna; Bank, ClaudiaIn many diploid species the sex chromosomes play a special role in mediating reproductive isolation. In haplodiploids, where females are diploid and males haploid, the whole genome behaves similarly to the X/Z chromosomes of diploids. Therefore, haplodiploid systems can serve as a model for the role of sex chromosomes in speciation and hybridization. A previously described population of Finnish Formica wood ant...