“Evolution is when things change, or Evolve, over time.”
This definition is actually in a textbook I own. But didn’t they just say that Evolution is when things Evolve? There’s not enough substance in that definition to cast a shadow! In Ch 4 the boys at Danny’s talk about the many different definitions for “Darwinian Evolution” which have been proposed by textbooks and web sites, and they will see why they fail.
In this video, your Rent-A-Friend (Bryan) will examine some popular definitions, and spend some time explaining why “a change in allele frequency” fails as a definition. First, he explains the concept: Population Genetics explained with Rubber Ducks!
A Bit of Orange 