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From ISOGG Wiki

Welcome to the The ISOGG Wiki...

...a free genetic genealogy encyclopedia with 503 articles and growing.


What is ISOGG?

The International Society of Genetic Genealogy (ISOGG) was founded in 2005 by DNA project administrators who shared a common vision: the promotion and education of genetic genealogy. Our mission is to advocate for and educate about the use of genetics as a tool for genealogical research, and to promote a supportive network for genetic genealogists.

This Wiki was established for the benefit and education of the genetic genealogy community. To contribute to this Wiki please join ISOGG (it's free!). If you don't have information to contribute enjoy reading the articles on this website.

Did You Know

You can find out more about this term...

Modal haplotype

A modal haplotype is the most commonly occurring haplotype (a set of STR marker values) derived from the DNA test results of a specific group of people. The modal haplotype does not necessarily correspond with the ancestral haplotype - the haplotype of the most recent common ancestor.

The two most commonly discussed modal haplotypes are the Atlantic Modal Haplotype, the most common haplotype in parts of Europe, associated with Haplogroup R1b, and the Cohen Modal Haplotype, the haplotype associated with the Jewish Cohanim tradition. However, a specific modal more the Genetics Glossary.

Explore Our Wiki

How To Search

The easiest way to find pages is to type the subject of interest into the Search Box on the top left of your screen. As you type, a drop-down list of pages will appear. Click on a suggested page to view it or click the very bottom of the list where it says "containing" to view every mention of the search term in the ISOGG Wiki. Many pages have shortcuts so that, for example, if you type in SNP you will automatically be taken to the page for single-nucleotide polymorphism and NPE will take you to the page for non-paternity event.

Contents Page and Alphabetical List

The Contents Page provides a thematic list of all the pages in the ISOGG Wiki. Additionally the Wiki can be searched from the Alphabetical List of Articles. Alternatively you can browse the pages by searching the Category Tree.

Get Involved & Help

Get involved

If you would like to add data of value to the Wiki and feel that you are not able to do this, but would like us to do it for you, please contact the Wiki Admins.

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