SUMMARY OF YSNP (May, 2016)

Defintion of FGC5628 STAR: FGC5628 STAR equates to FGC5628 positive and negative for all sons of FGC5628. For FGC5628, there are currently two sons: FGC5659 and DC24. Therefore, this branch includes only submissions that are FGC5628 positive and negative for the sons of FGC5628. Only NGS tests and YSEQ panel tests only can be truly FGC5628 STAR as DC24 is not tested by the FTDNA SNP pack test.

Classification of Branch: Probably the second largest branch under L226 after FGC5660.

Known sons: FGC5659 and DC24 are sons of FGC5628.

Estimated Breadth of branch (speculative estimate of positive submissions): currently only around ten submissions but the true scope is probably at least twice as large. Due to the 100 submission limit of the SAPP tool, the older age of this branch, less divergence found in this branch, massive parallel mutations under this branch and belonging to the bottleneck trunk of L226 where 30 % of all L226 private YSNPs reside, this branch will remain one of the most challenging branches to accurately and fully chart.

Scope of Testing within Signature: Four Big Y tests and two FTDNA SNP pack tests.

Dominant Surnames (including variants): McGuire (2), Anderson (1), Barry (1), Bresnan (1), Forbes (1), Groves (1), Pearson (1), Riel (1) and Rohde (1).

Date that branch was discovered: Unknown.

Source of Branch discovery: Four FTDNA Big Y tests (16274, B58927, N97658 and 295530).

Number of Negative Broad Tests: Around 45 Big Y results and around 40 more via SNP pack & SNP panel tests.

Number of Negative Tests within Signature: None known.

Pending Tests (within signature): None known.

ANALYSIS OF CURRENT FGC5628 STAR HAPLOTREE

I manually separated around 110 L226 submissions combined with 43 known YSNP results and then used the SAPP tool to generate a chart which matched my manual analysis. The SAPP tool appears to have missed connecting several submissions under common mutations but these connections are not extremely strong either. Both the manual analysis and the SAPP tool (with 100 submission limit) failed to reveal many submissions that probably belong to this branch. There is just too little divergence from the L226 modal to have enough genetic information connect many of the submissions that are probably part of this branch.

1) Since there were six YSNP tested submissions to analyze (worthy of being declared FGC5628 STAR), I first looked at the signatures of these submissions and manually determined several possible common YSTR marker mutations. The SAPP did not do a very good job with all the branching information due to the lack of divergence from the L226 modal. Also, there is also massive convergence due to parallel and backwards mutations. The true scope of scope of FGC5628 STAR is probably at least twice as large that what manual analysis or SAPP tool can currently find.

2) The current limit of around 100 submissions limits the accuracy of the descendant chart for this particular L226 branch. As more submissions can be entered into the SAPP tool, as new branches are discovered and as more YSNPs are tested, many more submissions will be included under the FGC5628 STAR branch over time.

3) However, between my manual analysis and the SAPP tool, four good testing candidates were revealed. In this special scenario, the SAPP tool could not due good job in charting the FGC56280 STAR haplotree due the lack of genetic diversity in this branch. Increasing the limit of 100 submissions may help some but the lack of common shared mutations and the abundance of parallel mutations between submissions will remain a significant obstable in producing a complete and accurate descendant chart under FGC5628.

OTHER FUTURE YSNP TESTING

No pending tests are known.

FGC5628 STAR Haplotree

The link to the haplotree chart is the best way to look at the evolution of the FGC5628 STAR haplotree. It is visually much easier to follow than spreadsheets and is very close to genealogist's descendant tree charts that genealogists already are well trained in analyzing:

Haplotree of FGC5628 STAR

This summary will attempt to priortize testing and explain why each test is beneficial to the the verification of the FGC5628 STAR branch.

Here are the priorities for testing:

1) It is not recommended that any of current submissions that are predicted positive for the FGC5628 STAR should test the individual YSNPs of FGC5628, FGC5659 and DC24. Rather than test three YSNPs at $52.50 from YSEQ, it would be preferable to order the YSEQ SNP panel test for $88 which includes all three YSNPs. It is not recommended that these testing candidates order the FTDNA SNP pack since it is currently missing DC24. Since two submissions have already tested for FGC5628 and FGC5659, it recommended that these two submissions only test DC24 to become FGC5628 STAR:

McGuire 302523 - test for DC24 only
Bresnan 21421 - test for DC24 only

The other submisisons should order the YSEQ SNP panel:

Maguire 195523
Groves yRMV3G
Pearson N81958
Barry 248507

2) Once the private YSNPs are returned from the FGC NGS test, it is highly recommended that FGC5628 STAR submissions should test the private YSNPs of NGS submissions that belong to the same branch. The branch should also have a pretty strong signature to warrant testing of private YSNPs. Only one testing candidate qualifies for this testing:

Groves (yRMV3G) should start phase one testing of the private YSNPs of Rohde (358937). The first step is to order a "Wish a SNP" for these four private YSNPs at $1 each. Once these YSNPs become available for order, the phase one testing includes:

DC224, DC225, DC226 and DC227 ($70)

If Groves tests positive for just one private YSNP, a new L226 will be discovered.