Why Is My Haplogroup Information Missing?

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Why is my haplogroup information missing?

Assigning haplogroups during raw data analysis primarily depends on the number of Y chromosome and mtDNA gene markers present in your raw data. In some raw data files, such as in female samples, the Y chromosome data will not be present. In certain other cases, the company may not include Y and Mitochondrial DNA markers in their raw data or too few data points are present. In such cases, a haplogroup cannot be assigned.

For example, the autosomal raw data from Family Tree DNA’s Family Finder test does not contain markers from the Y chromosome and mtDNA. In this case, our tool will be unable to associate a haplogroup to the sample.

 

Why am I being assigned a broad haplogroup and not the subclades?

If you are getting a parent haplogroup such as H, N etc. this is likely because only the mutation corresponding to the parent haplogroup was found but not the ones corresponding to their subclades. This is also likely due to insufficient SNPs in your raw data file.

 

How many Y chromosome and mtDNA markers are found in my raw data?

Below is a table showing the number of Y chromosome and mtDNA markers present in the raw data from different companies.

 

Chip versionIllumina BeadChip platformY chromosome SNPsmtDNA SNPs
23andMe
v1Illumina 4-sample HumanHap550 Plus1,880(unknown)
v2Illumina 4-sample HumanHap550 Plus1,8212,040
v3Illumina 12-sample HumanOmniExpress Plus1,7662,459
v4Illumina 24-sample HTS iSelect HD2,3293,154
v5Infinium Global Screening Array-24 v1.0 BeadChip3,7334,318
Ancestry DNA
-Customized Illumina chip1,691195
Living DNA
-Customized Global screening Array(unknown)4,700

 

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