When particular genetic sequences change in a population (e.g., via mutation) and these changes ... two general classes of evolutionary change: microevolution (change below the level of the ...

In other words, mutation, migration, genetic drift, and natural selection can produce major evolutionary changes given enough time. The key element is vast amounts of time -- on a scale that is ...

Farr, Christina Vasileiou, Peter A. Lind, and Paul B. Rainey, reveals that mutations in the promoter region of the rpoS gene occur at an astonishing rate—approximately 5,000 times higher than ...