E. coli long-term evolution experiment have allowed direct observation of major evolutionary shifts in the laboratory.

We can't know what evolutionary shifts will never take place if we become mere vessels for this mutant software the Rix dare to call a mind.

This Darwinian struggle has its roots in two evolutionary shifts.

The long-term evolution experiments using E. coli, begun by Richard Lenski in 1988, have allowed direct observation of major evolutionary shifts in the laboratory.

Thomas Jayne, a New York decorator, attributes it to an evolutionary shift in what is and is not considered private.

Mr. de Klerk has promised an evolutionary shift away from white rule and a greater measure of responsibility for the black majority.

Combined with a significant mutation rate (which in the lab could be artificially boosted), interesting evolutionary shifts can happen in easily observable time.

There must be an evolutionary shift.

The result is more an evolutionary shift, focusing on visual modernization and ease of use.

The traditional explanation is that human ancestors scavenged carcasses for high-quality food that preceded the evolutionary shift to smaller guts and larger brains.