DNA Help Page
Below are links to websites and/or blogs that offer additional information and tools to help you better understand DNA and how DNA can help your genealogy research.
DNAeXplain - This link is to the publication page by Roberta Estes with many helpful articles, charts and templates that can help with your DNA research. Included are articles to help you get started, understand basic DNA reports and templates for building your own DNA Pedigree chart. There are some interesting charts on very early American settlements, such as Jamestown, that include many surnames including a Pennington. DNAeXplain is a terrific source for DNA explanations and information.