Genetic distance
From ISOGG Wiki
Genetic distance is the term used to describe the number of differences or mutations between two sets of Y-chromosome DNA or mitochondrial DNA test results. A genetic distance of zero means that there are no differences in the two results and there is an exact match.[1]
For autosomal DNA comparisons genetic distance relates to the size of a shared DNA segment. The genetic distance is then the length of the segment in centiMorgans.[1]
Contents
FTDNA FAQs
See also the following Family Tree DNA FAQs in the FTDNA Learning Center:
- Definition of genetic distance?
- How is genetic distance calculated for null values?
- Y-DNA genetic distance
- In Gap 2.0 what is the Y-DNA genetic distance page?
- How does the infinite allele comparison method work for palindromic markers?
Note that as of 12 December 2012 Family Tree DNA changed the way that they calculated genetic distance for palindromic STR markers and null allele values. This had the effect of changing the degree of matching for some people.
Genebase Learning Center
- How is genetic distance calculated for Y-DNA STR markers Genebase tutorial. Accessed 9 November 2013.
Blog posts
- Is Genetic Distance an Adequate Predictor of Relationships? by Jim Owston, The Lineal Arboretum, 19 June 2014.
Further reading
- An empirical analysis of genetic distances in a single family in genealogical time by Diana Gale Matthiesen
- FTDNA Genetic Distance & Family Group Assignments by Georgia Kinney Bopp, 2 August 2005.
- Y-DNA project grouping with genetic distance. Dave Hamm. Hamm Country Blog, 16 April 2009.
See also
- Portal:DNA Project Administration
- Convergence
- Matching and grouping in surname DNA projects
- Null value
- RecLOH
- SNP testing
- TiP
- Y-DNA tools
References
- ↑ 1.0 1.1 Definition of genetic distance Family Tree DNA Learning Center