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Genetic testing, also known as DNA testing, is used to identify changes in DNA sequence or chromosome structure. Genetic testing can also include measuring the results of genetic changes, such as RNA analysis as an output of gene expression , or through biochemical analysis to measure specific protein output. [ 1 ]
Three principal types of genealogical DNA tests are available, with each looking at a different part of the genome and being useful for different types of genealogical research: autosomal (atDNA), mitochondrial (mtDNA), and Y-chromosome (Y-DNA). Autosomal tests may result in a large number of DNA matches to both males and females who have also ...
23andMe Holding Co. is an American personal genomics and biotechnology company based in South San Francisco, California. [1] It is best known for providing a direct-to-consumer genetic testing service in which customers provide a saliva sample that is laboratory analysed, using single nucleotide polymorphism genotyping, [2] to generate reports relating to the customer's ancestry and genetic ...
The genetic testing site 23andMe includes a Family Tree feature that automatically generates a tree based on DNA relatives in its database. It also allows customers to add other relatives to the tree.
The results of this test provide percentages of a DNA associated with general regions or specific ethnic groups (e.g. Western Europe, Asia, Jewish, Native American, etc.). Notably, unlike other testing companies, they chose to strip out markers for mendelian medical issues, [23] [24] [25] mtDNA results, and Y-DNA SNP results.
For this reason autosomal DNA testing would be a more precise paternity testing method. [8] In the US, the AABB has regulations for DNA paternity and family relationship testing, but AABB accreditation is not required. DNA test results are legally admissible if the collection and the processing follows a chain of custody.
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