Speciation is one of the core issues in evolutionary biology. Sympatric speciation is the evolution of reproductive isolation without geographic barriers in which new species arise from a single ...

Male pregnancy in seahorses may do more than reverse traditional gender roles. It could also influence the way new species form from single populations of these ancient creatures. Studies have shown ...

We examined causes of speciation in asexual populations in both sympatry and parapatry, providing an alternative explanation for the speciation patterns reported by Dieckmann and Doebeli (1999) and ...

Three models for sympatric and alleged sympatric speciation are known in evolutionary research. The first model, the most "pure form" of sympatric speciation, describes the development of two species ...

The offspring of crosses between related species can sometimes fill a new environmental niche, and such hybridizations may even lead to speciation. In the 20th century, animals such as mules and ...

Allopatric speciation is often assumed to occur as a consequence of adaptive divergence between two isolated populations. However, there are some scenarios in which reproductive isolation can be ...

How do new species form? Like most areas of Evolutionary Biology, research related to the formation of new species - 'speciation ' - is rich in historical and current debate. Here, we review both ...

It’s not every day that you get to see evolution happen before your eyes. Scratch that, until very recently, it wasn’t any day, since the process of speciation — in which one species splits into two ...

German researcher Christian Rabeling was digging up ant colonies on a college campus in Brazil when he found something unexpected—certain ants appeared smaller and shinier and had wings. Rabeling soon ...

In a world without natural selection and no vast mountain ranges dividing populations, one might expect biodiversity to remain forever stagnant. But according to a study published this week in Nature, ...