Humanities Homework Help

Can you help me understand this Anthropology question?

In simplest terms, evolution can be defined as a change in allele frequency over time.  A fact of nature is that allele frequencies for any given gene are always in a state of flux and for that reason evolution is a fact of nature.  At the same time we have evolutionary theories that help us explain why allele frequencies change in the first place.  For this section we will explore these evolutionary mechanisms.  

The purpose of this discussion board is meant for you to share an article or a news story that specifically deals with how evolutionary mechanisms have and are shaping the world around us.  It can be a story that looks at the fossil record or it can be one that explores current examples of evolution. 

You may look for an example of natural selection, mutation, gene flow, genetic drift, sexual selection.