There is a chart of the DNA VERIFIED lineages of the R1a Clan Donald at
(to see larger type, stretch your browser window horizontally, don't try using larger type.) The Tulloch line is at far left.
The corresponding DNA results are on the top chart at
The lines themselves are DNA verified exceedingly well (this is the longest and oldest truly DNA verified tree in the world). The genealogical lines are combinations of standard Clan Donald records, personal records of the test participants, and some few primary records. You can be 100.000% sure that living people on these charts are descendants of certain older people ... but we cannot absolutely guarantee the correctness of the name and dates and location of each and every generation. We'd truly love your help in getting that done to Wikitree "badgeable" standards.
Persons claiming close connections to this tree can, usually (exception, some Clanranald/Glengarry men) verify those connections with very cheap ($20 per test) tests at a company called Yseq.net. You need not pay well over $100 for a Y-STR test at FamilytreeDNA.com.
I am the DNA admin at the Clan Donald. I exceedingly strongly suggest you contact me personally at email@example.com for test suggestions. If you have lines that connect to those on one of those charts, please contact me even if you do not wish to pay for a test. The Clan Donald might (or might not) want to pay for a test.