This population evolved into modern Bobcats around 20,000 years ago.

Over time, subject to intense selective pressures, the small population evolved the characteristics of the first polar bears.

An evolutionary arms race is a system where two populations are evolving in order to continuously one-up members of the other population.

The populations that live on these sky islands are cut off from each other, and evolve independently.

With increasing disposable incomes, a young demographic population will evolve.

The population will thus evolve, and the relative frequencies of different strategies will change.

During Roman times, the population evolved towards agricultural sector.

Some populations have evolved resistance to certain herbicides, including glyphosphate.

The separate populations over time may evolve distinctly different characteristics.

Undergoing drastic changes in their genome, populations evolve quickly to become new species.