Charles Darwin and Alfred Russel Wallace based their insight that organisms evolve by natural selection on four principles 1,2: first, that organisms have “individual variations” that are faithfully ...

A link between evolution over short time frames (microevolution) and long time frames (macroevolution) that could open new approaches to understanding some of biology's deepest questions is proposed ...

The word “evolution” has many different meanings. Two definitions vital to Darwinian evolution are microevoloution and macroevolution. Microevolution, also called adaption or variation, is a change ...