DNA can be a tool for genealogy
DNA, the genetic code of all life, is passed down from parents to their children. DNA can be used to learn things about family history.
Types
Mitochondrial DNA testing looks at DNA from the mitochondria, which is only passed along the maternal line. Y-chromosome testing looks at Y-chromosome DNA, which is only passed on from father to son. Nuclear DNA testing looks at snips of DNA from the nucleus of a cell.
Companies
Family history DNA services are available through many companies, including Oxford Ancestors and Family Tree DNA.
Process
To get your DNA tested, you must first order a kit from the company, then take a sample of your DNA using a cheek swab. After submitting the sample to the company, you'll receive results back in a few weeks.
Results
Family history DNA testing mostly involves finding information about the distant past, including distant ancestors' homelands and human migration patterns. It can also be used to compare your DNA with others of the same surname to confirm if you are related.
Limitations
Genealogical family history research cannot tell you about a specific ancestor, only about a general family line. It is best used in conjunction with other forms of family history research.
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