Click here to download our 2019-04-03 tree for I-PH908
At the present time, I-PH908 has approximately 28 immediate subbranches, 12 branches are named and 16 are called I-PH908*. This is approximately equivalent to one man who had 28 surviving sons, and each of these sons founded a male line that has survived until the present day.
But the Big Y-500 test does not have high enough resolution to detect SNPs that occurred at each generation. It's more likely that the founder of PH908 had fewer sons with surviving male lines, and that some of these 28 lineages are from expansions in the second, third or fourth generation after the most recent common ancestor of I-PH908.
The Big Y-700 test sequences more regions of the Y chromosome, and maybe we will find some SNPs that can help resolve the 28 branches into a tree with more structure. One possible new SNP is called FT14506.
Some I-PH908 men have FT14506+ results, and others have FT14506- results as indicated on this updated tree.
At this point, the men with FT14506+ results all have the STR marker value DYS561=16, as mentioned in previous posts (click here), DYS561 seems to divide I-PH908 into two groups.
But not all men with DYS561=16 are FT14506+, there is one I-PH908* man with DYS561=16 who is FT14506- (this FT14506 result isn't shown on the tree).
People in several different branches of I-PH908 are testing FT14506 at YSeq.net and we will learn more soon.
This tree also shows three new branches, indicated in red
Click here to find our previous tree for I-PH908
Click here for a brief description of the I-PH908 haplogroup