In a previous thread I also discussed ERV's (Edogenous Retro-Viruses) and how they show evidence for common descent. This is quite a complex topic - but the following video describes it well and is only a few minutes long:

YouTube - Preferential Integration of Endogenous Retroviruses
Delta9 UK Reviewed by Delta9 UK on . Evidence of Common Descent This time I thought it might be more accessible to cover these topics using video. Common descent is something that often causes arguments wrt Intelligent Design / Creationism. I'm not posting this to start an argument - this is to help you make up your own mind. A lot of the important facets of Evolution are difficult to grasp without some formal education on the topic. The first video is from Ken Miller, this is a small segment of a much longer (and very good btw) video. YouTube Rating: 5