Modal haplotype

Modal haplotype

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A modal haplotype is an ancestral haplotype
Haplotype
A haplotype in genetics is a combination of alleles at adjacent locations on the chromosome that are transmitted together...

 derived from the DNA test
Genealogical DNA test
A genealogical DNA test examines the nucleotides at specific locations on a person's DNA for genetic genealogy purposes. The test results are not meant to have any informative medical value and do not determine specific genetic diseases or disorders ; they are intended only to give genealogical...

 results of a specific group of people, using genetic genealogy
Genetic genealogy
Genetic genealogy is the application of genetics to traditional genealogy. Genetic genealogy involves the use of genealogical DNA testing to determine the level of genetic relationship between individuals.-History:...

.

The two most commonly discussed modal haplotypes are the Atlantic Modal Haplotype
Atlantic Modal Haplotype
In human genetics, the Atlantic Modal Haplotype or haplotype 15 is a Y chromosome haplotype of Y-STR microsatellite variations, associated with the Haplogroup R1b. It was discovered prior to many of the SNPs now used to identify subclades of R1b and references to it can be found in some of the...

 (the most common haplotype in parts of Europe, associated with Haplogroup R1b
Haplogroup R1b (Y-DNA)
The point of origin of R1b is thought to lie in Eurasia, most likely in Western Asia. T. Karafet et al. estimated the age of R1, the parent of R1b, as 18,500 years before present....

) and the Cohen Modal Haplotype (the haplotype associated with the Jewish Cohanim
Kohen
A Kohen is the Hebrew word for priest. Jewish Kohens are traditionally believed and halachically required to be of direct patrilineal descent from the Biblical Aaron....

 tradition). However, a specific modal haplotype may be determined for any genealogical DNA test
Genealogical DNA test
A genealogical DNA test examines the nucleotides at specific locations on a person's DNA for genetic genealogy purposes. The test results are not meant to have any informative medical value and do not determine specific genetic diseases or disorders ; they are intended only to give genealogical...

-based surname project
Surname project
A surname DNA project is a genetic genealogy project which uses genealogical DNA tests to trace male lineage.Because surnames are passed down from father to son in many cultures, and Y-chromosomes are passed from father to son with a predictable rate of mutation, people with the same surname can...

or other test group.