If one would rewind the tape of life, would evolution result in the same outcome? An evolutionary biologist came up with this famous question. He suggested that evolution would not repeat itself: the ...

Evolutionary biologists have completed the most extensive study of sympatric speciation so far. They used around 20,000 characteristics of 450 fish to document the parallel evolution of cichlid fish ...

For every two species of mammal there is one species of cichlid fish, which goes to show that biodiversity is distributed rather unevenly among animals. But why? And to what extent can evolution be ...

A fundamental question in evolutionary research is: is a geographic barrier dividing the original population into two genetically separated populations required for the origin of new species? Or is so ...