DNA General Information
Genetic DNA testing can help you discover the origins of your paternal and maternal lines. It can prove or disprove a genealogical problem. This testing can help find unknown family lines in cases of adoption or other separations from biological lines. It does this by comparing your results with other individuals’ test results. It can help find relatives with whom you share a common ancestor. These new relatives might help you break through your genealogical ‘brick wall’ and they may have pictures and stories to share. It is a wonderful new tool to be used with traditional genealogical research.
A Y chromosome DNA test (Y-DNA test) is a genealogical DNA test which is used to explore a man’s patrilineal or direct father’s-line ancestry. (Source: ISOGG Wiki)
A mitochondrial DNA test (mtDNA test) traces a person’s matrilineal or mother-line ancestry using the DNA in his or her mitochondria. (Source: ISOGG Wiki)
DNA Testing Sites
The ISOGG has an Autosomal DNA testing comparison chart that is helpful in determining which testing company to use.
Learning More about DNA
Learn Genetics “Chromosomes and Inheritance” Slideshows & Videos from the Genetic Science Learning Center at the University of Utah regarding Chromosomes and the four types of DNA.
Unlocking the Genealogical Secrets of the X Chromosome by Blaine Bettinger is a great explanation of how X Chromosome is inherited differently that the autosomal chromosomes.