Autosomal DNA is a term used in genetic genealogy to describe DNA which is inherited from the autosomal chromosomes. An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes. Humans have 22 pairs of autosomes and one pair of sex chromosomes (the X chromosome and the Y chromosome).
Learn more about autosomal DNA: 1  Autosomal DNA Testing for Genealogy-How it Works. 2  The Genetic Genealogist (Blaine Bettinger) - A Review of AncestryDNA, FamilyFinder. 3  Your Genetic Genealogist (CeCe Moore) - Ancestry.com's AncestryDNA Product. One of the coolest genetic tools in the genealogist's toolbox (especially for those of us of the female persuasion without Y-DNA) is the relatively new autosomal DNA test. By broader, I mean that it can find matches in ANY branch of your family tree. It is not limited to just the narrow paternal or maternal lines. Great for about Five Generations. By shallower, I mean that this new autosomal DNA test only works when people share relatively recent ancestors. Relationships out to the second cousin level are virtually certain to show up. The chance of finding a match with a particular relative begins to decline slightly with third cousins. This new type of autosomal DNA test checks about 700,000 pairs of locations in your autosomal DNA. These locations are called single nucleotide polymorphisms (SNPs). The lab then compares your autosomal DNA with that of other customers and looks for identical segments with many common SNPs. AncestryDNA is an autosomal DNA test that examines your unique genetic code for clues about your family history. Then we use genetic science to determine family relationships within our database of AncestryDNA members and your ethnicity origins.AncestryDNA extracts your DNA from a small saliva sample.  Autosomal DNA statistics describe the connection between the genealogical relationship between two people and the amount of autosomal DNA which they share. Understanding this connection is critical to interpreting the results of an autosomal DNA test. Autosomal DNA is inherited equally from both parents.  The DNA you inherited from your parents is a mixture of the DNA they inherited from each of their parents. The mixing occurs randomly. But long blocks of DNA tend to stick together, often for several generations. This new type of autosomal DNA test checks about 700,000 pairs of locations in your autosomal DNA. These locations are called single nucleotide polymorphisms (SNPs). The lab then compares your autosomal DNA with that of other customers and looks for identical segments with many common SNPs. An autosomal DNA test can introduce you to those cousins who have taken the same test. Some of your newfound cousins will have genealogical information that you lack. By comparing notes and pooling your resources, you both win. Genealogists also use this test to confirm suspected connections between deceased ancestors. This new type of autosomal DNA test checks about 700,000 pairs of locations in your autosomal DNA. These locations are called single nucleotide polymorphisms (SNPs). The lab then compares your autosomal DNA with that of other customers and looks for identical segments with many common SNPs. English. Autosomal DNA is a term used in genetic genealogy to describe DNA which is inherited from the autosomal chromosomes. An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes. Humans have 22 pairs of autosomes and one pair of sex chromosomes (the X chromosome and the Y chromosome). Autosomes are numbered roughly in relation to their sizes. That is, Chromosome 1 has approximately 2,800 genes, while chromosome 22 has approximately 750 genes. Your autosomal DNA, therefore, contains random bits of DNA from your great-grandparents, great-great grandparents, and so on. Close relatives will share large fragments of DNA from a common ancestor. Connections arising from more distant relatives will result in smaller fragments of shared DNA. Therefore, your autosomes essentially contain a complete genetic record, with all branches of your ancestry at some point contributing a piece of your autosomal DNA. Used For: Autosomal DNA tests can be used to search for relative connections along any branch of your family tree. Twenty-two of these matched pairs of chromosomes are called autosomes, while the 23rd pair determines your sex (male or female). Autosomal DNA is inherited from both parents, and includes random contributions from their parents, grandparents, and so on. Therefore, your autosomes essentially contain a complete genetic record, with all branches of your ancestry at some point contributing a piece of your autosomal DNA. Used For: Autosomal DNA tests can be used to search for relative connections along any branch of your family tree.
http://genealogy.about.com/b/2012/05/15/autosomal-dna-testing.htm http://www.dna-testing-adviser.com/Autosomal-DNA-Testing.html http://c.mfcreative.com/email/newsletters/amu/2013/1113/AncestryDNA101.pdf http://www.isogg.org/wiki/Autosomal_DNA_statistics http://www.dna-testing-adviser.com/Autosomal-DNA-Testing.html http://www.dna-testing-adviser.com/Autosomal-DNA-Testing.html http://www.isogg.org/wiki/Autosomal_DNA http://genealogy.about.com/od/dna_genetics/p/autosomal.htm http://genealogy.about.com/od/dna_genetics/p/autosomal.htm
what does autosomal dna show