Encyclopedia of mtDNA Origins

  • L1c4

    Haplogroup L1c4 is a branch on the maternal tree of human kind. Its age is between 24,300 and 39,800 years (Behar et al. 2012b).

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Explore your maternal heritage in the Encyclopedia of mtDNA Origins.

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Genetic Genealogy News

Exploring Microarray Chips

I am starting my first big adventure for the Genetic Genealogy Compendium. Four major genetic genealogy test sellers use microarray chips (Genotyping BeadChips) for products: Ancestry.com, 23andMe, Family Tree DNA, and the National Geographic Genographic Project.

The Encyclopedia of mtDNA Origins – Initial launch

This morning, I am pushing the Encyclopedia of mtDNA Origins out into the world. Each of the requirements for it is complete. What remains is doing quality assurance work and flushing out the basic background text.

The Encyclopedia of mtDNA Origins – Resources & Citizen Science

I am continuing my work on the Encyclopedia of mtDNA Origins from last time… Today, I am working on the final requirement in the project to create mtDNA pages for all named branches of our shared maternal tree. It is a list of additional resources to help the user understand and enjoy their results.

  • Dixie Pass Trail- Wildflowers & Bryophytes | by Wrangell-St. Elias National Park

The Encyclopedia of mtDNA Origins – Sources, sources, sources

I am continuing my work on the Encyclopedia of mtDNA Origins from last time… This is a project that will create mtDNA pages for all named branches of our shared maternal tree. This time I will talk about the ninth requirement, a list of academic journal articles that mention the branch.

Recent Journal Articles

Western Eurasian genetic influences in the Indonesian Archipelago

To locate the primary areas of Western Eurasian genetic influence in Indonesia, we have assembled published uniparental genetic data from ∼2900 Indonesian individuals.

Molecular Genealogy of a Mongol Queen’s Family and Her Possible Kinship with Genghis Khan

Here, we propose that Genghis Khan and his family carried Y-haplogroup R1b-M343, which is prevalent in West Eurasia, rather than the Y-haplogroup C3c-M48, which is prevalent in Asia and which is widely accepted to be present in the family members of Genghis Khan.

Forensic genetic study of 29 Y-STRs in Korean population

In this study, we compared two recently released commercial Y-chromosomal short tandem repeat (Y-STR) kits: the PowerPlex Y23 System (PPY23) and Yfiler® PLUS PCR Amplification Kit (YPlus). We performed validation studies, including sensitivity, tolerance to PCR inhibitors, and mixture analysis, and a population genetics study using 306 unrelated South Korean males.

Genetic diversity of two Neolithic populations provides evidence of farming expansions in North China

The West Liao River Valley and the Yellow River Valley are recognized Neolithic farming centers in North China. The population dynamics between these two centers have significantly contributed to the present-day genetic patterns and the agricultural advances of North China.

Latest Posts

Ancestry V2 Chip

Background The Ancestry V2 chip is Ancestry.com's second microarray chip. It is a custom version of the Illumina OmniExpress Plus Genotyping BeadChip. Its their current chip. Microarray chips test a small percentage of SNPs on the [...]

Ancestry V1 Chip

The Ancestry V1 chip was Ancestry.com's first microarray chip. It was a standard version of the Illumina OmniExpress chip Genotyping BeadChip.

23andMe V4 Chip

The 23andMe V4 chip is 23andMe’s fourth microarray chip and is the one now in use. It replaced their V3 chip in November 2013. It is a completely custom Illumina Genotyping BeadChip.

23andMe V3 Chip

The 23andMe V3 chip was 23andMe's third microarray chip. It replaced their V2 chip in January 2011. It was a custom version of the Illumina OmniExpress Genotyping BeadChip. One of its key features was backwards compatibility with their V2 chip.

23andMe V2 Chip

The 23andMe V2 chip was 23andMe’s second microarray chip. It is almost surely the Illumina HumanHap550 Genotyping BeadChip.