| Term | Definition |
| Autosomal DNA | A random mix of DNA from both of your parents |
| Content Management System (CMS) | Software to create websites |
| FamilyTreeDNA (FTDNA) | DNA testing company |
| GEDCOM | Standard for genealogical data exchange – gedcom.org |
| GEDmatch | Applications for comparing DNA test results – gedmatch.com |
| Mitochondrial DNA (mt-DNA) | DNA used to trace your direct maternal line |
| The Next Generation of Genealogy Sitebuilding (TNG) | A CMS to manage and display a family tree on a website |
| WordPress | A popular CMS for building websites – wordpress.com and wordpress.org |
| Y-DNA | Chromosome from father, only men inherit the Y chromosome |