Saturday, March 29, 2014

Big Y - YFull - Y-Chr Sequence Interpretation Service

I bought Big Y during the initial sale in November 2013 and around mid-March 2014, I received my Big Y results. After contacting FTDNA helpdesk, I received by Big Y .BAM files and I uploaded it to YFull to get interpreted. Today, I received my results from them. I am going to share what I received. This will help you understand its valuable service and encourage you to their service.

Order Big Y

If you haven't ordered Big Y yet, I recommend ordering it from FamilyTreeDNA website. I believe it is currently only for existing customers and can be order by clicking upgrade button at the top right corner.

Get the .BAM file

After getting the Big Y results, I recommend you to install the Big Y AddOn for Google Chrome which helps you to download and plot/mark on the latest Y-Tree. Getting the .BAM file must be requested from FTDNA Helpdesk. Please note that, .BAM file will be around 1 GB in size and it may take a while to download.

Ordering - YFull Interpretation

There seems to be two interpretation service, one for researchers and the other anonymous. I went for the one specified for researchers.

Once you click order now, you get the following form:

Fill in your details and click submit.

Results - YFull Interpretation

After a week, I get login details for YFull and I can login to see my results. Below screenshot is when I login into YFull.

Homepage of after login

Haplogroup and SNPs

Below are the results you will get for positive, negative and ambiguous SNP results.

Positive SNPs

Negative SNPs

Ambiguous SNPs
You will also view your terminal haplogroup results at the top of the screen which is based on ISOGG v9.29 as on 2 March 2014 and YFull Experimental YTree v2.10

Y-Haplogroup and Terminal SNP

You can also click the download CSV to download the results in your hard disk. This download includes all positive, negative and ambiguous SNPs.

STR results

You can view all the 481 STR results.

Y-STR results
You can also filter by 12, 25, 37, 67 and 111 Y-STR markers. For example, below screenshot is filtered by the Y-STR 111 markers.

Y-STR filtered by 111 markers
There are some STR with 'Loci is not available' and some with values but greyed out as 'Uncertain'. If you had already done any Y-STR test less than 111 markers previously, then this result is an excellent value add and fill in the missing gaps.

You can also click the download CSV to download the results in your hard disk.

Private SNPs

There are Best qual, Acceptable qual, Unreliable qual, Low qual, One reading! and INDELs tabs.

Private SNPs

Browse raw data

Apart from haplogroup, SNPs and STRs, you can also browse the .BAM by position.

Browse raw data

Check SNPs

You can also check a particular SNP. For example, if I key-in M89, my previous terminal SNP, I get the below result.

Check SNPs


You can also view the statistics for the detailed results based on your .BAM file.
Raw Data Statistics

Known SNPs Statistics

STR Statistics

Private SNPs Statistics

Raw Mt Statistics

Full Mt

What shocked me by total surprise is that, the .BAM file which is supposed to be for Y-DNA, also contains my Mt-DNA results!
You can also click the download RSRS or rCRS CSV to download the results in either RSRS or rCRS format in your hard disk.


Finally, there are groups where you can view and compare results of others belonging to the same haplogroup.
Available Groups
I don't see my terminal SNP to join. For now, there are only 6 groups (as of March 2014) and the largest group is R1a of 102 members and I believe it will grow slowly as time goes by.

Y-STR Comparison

SNP comparison


You can download my YFull Interpretation results here to have a look on what you can get.


Y-Full Interpretation service is certainly a must for every Big Y customer, and I strongly recommend it. If you are more focused on paternal ancestry line, I strongly recommend going for Big Y and use Y Full interpretation service.

Big Y currently costs US$ 695 and includes most of mtDNA, 400+ Y-STR and 50000 Y-SNPs. If we split the costs, full mtDNA US$ 199, 111 Y-STR US$ 359 and only individual Y-SNP tests are provided on request which is extremely costly, like US$ 39 per SNP. Hence, confirming just 5 individual SNPs and doing the other available tests will easily exceed the cost of Big Y.

I am grateful to YFull team for providing an excellent service free of cost.

Note: The costs are as on 29-Mar-2014 without any discounts or offers.