منابع مشابه
Hybridization and speciation.
Hybridization has many and varied impacts on the process of speciation. Hybridization may slow or reverse differentiation by allowing gene flow and recombination. It may accelerate speciation via adaptive introgression or cause near-instantaneous speciation by allopolyploidization. It may have multiple effects at different stages and in different spatial contexts within a single speciation even...
متن کاملHybridization and speciation in centrarchids
Open any field guide and you will find a list of species, with brief descriptions of how to distinguish each species from other closely related species. Such field guides convey an impression of stable, cleanly delineated groups. This can lead to significant confusion when our orderly Linnean categories run into the sometimes messy reality of biology. For example, consider the recent controvers...
متن کاملHost Adaptation and Speciation through Hybridization and Polyploidy in Phytophthora
It is becoming increasingly evident that interspecific hybridization is a common event in phytophthora evolution. Yet, the fundamental processes underlying interspecific hybridization and the consequences for its ecological fitness and distribution are not well understood. We studied hybridization events in phytophthora clade 8b. This is a cold-tolerant group of plant pathogenic oomycetes in wh...
متن کاملWhat haplodiploids can teach us about hybridization and speciation
Most evolutionary theory focuses on species that reproduce through sexual reproduction where both sexes have a diploid chromosome count. Yet a substantial proportion of multicellular species display complex life cycles, with both haploid and diploid life stages. A classic example is haplodiploidy, where females develop from fertilized eggs and are diploid, while males develop from unfertilized ...
متن کاملHybridization Reveals the Evolving Genomic Architecture of Speciation
The rate at which genomes diverge during speciation is unknown, as are the physical dynamics of the process. Here, we compare full genome sequences of 32 butterflies, representing five species from a hybridizing Heliconius butterfly community, to examine genome-wide patterns of introgression and infer how divergence evolves during the speciation process. Our analyses reveal that initial diverge...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2013
ISSN: 1010-061X
DOI: 10.1111/j.1420-9101.2012.02599.x