SNPs for I1-P and upstream now individually orderable

[lgmayka]

These SNPs can now be ordered individually from FTDNA:

S4767
S4795
S7642

According to Ken Nordtvedt’s Chromo2 chart for this part of the tree (http://knordtvedt.home.bresnan.net/Chromo2I1xZ58xL22.pptx) as well as Big Y results available to me:

S7642 is specific to I1-P
S4767 includes both I1-P and I1-M227
S4795 is upstream from L69 and corresponds to CTS6364+ CTS10028-

[lgmayka]

YFull's new haplotree for I-CTS6364 (http://yfull.com/tree/I1a1/) now has a subclade that unites I1-P with the old I1-M227. This new upstream subclade is marked by S4767, S4795, and Y3866.