The plumage characteristics of male Indigo and Lazuli Buntings are distinct, but the two species can learn each other's songs. Populations comprising Indigo, Lazuli and hybrid individuals occur in the ...

Drosophila pavani and Drosophila gaucha are two sibling species, morphologically almost identical, which can give abundant though sterile offspring in the laboratory. As these hybrids seem normal and ...

Reproductive interactions between incipient species are likely to play an important role in shaping their evolutionary trajectories. An important step in the speciation process is the formation of ...

Hybrid sterility and reproductive isolation represent critical challenges for rice breeding programmes, as these biological barriers restrict the successful fusion of diverse genetic backgrounds. By ...

When two organisms typically do not interbreed with one another, they are considered different species. But what are the reproductive barriers that isolate one population from another? Hear the ...