Why sould I take a deep clade test?

[DESinRiver]

I received the following in an email from FDTDNA

Family Tree DNA is pleased to announce the introduction of a new Deep Clade test for descendants of Haplogroup J2-M172. The purpose of this test is to identify your most terminal SNP on the Y-DNA Tree of mankind!

My question: What benefit would this be to me?

Don Sherry

[Davidari8]

Same question and more Z-574+

Yes, I would like an answer to this question. PLUS I have tested Z-574+ yet with all the new categories you've added there is no z-574? Where is it located?

[lgmayka]

The J-M172 SNP Pack does not include Z574.
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Includes the following SNPs on the haplotree:
M172, M410, CTS7683, L26, PF5197, PF5172, PF5191, PF5174, L24, L25, PF5125, M67, Z500, Z467, M319, PF5050, PF5058, PF5056, P279, M340, M12, Z575, M241, Z1297, L283, Z628, Z590, Z1048, M205, PF7316, M68, M419, PF7384, Z35865, SK1317, Y12386, Z6049, PF5088, Z7430, FGC15782, Y14678, Y7708, Z6065, S23154, Y8378, Y8880, Z1846, Z2227, FGC16088, FGC16096, FGC35005, PH4970, Z2222

Includes the following SNPs that are NOT on the haplotree:
CTS9636, FGC15865, FGC30776, L290, PF5183, PF5252, PF7320, PF7413, PF7415, PF7418, PF7421, PH3085, S15439, S18115, S19231, S23891, S25338, SK1363, SK1390, SK1395, SK1396, Y5168, Y5169, Y5500, Y8991, Y8992, Y9347, Y965, Y972, Y978, Y998, YP113, YP129, Z1296, Z2443, Z2444, Z2448, Z28502, Z34440, Z34460, Z36800, Z6048, Z6057, Z6060, Z6064, Z6091, Z8430, Z8429, Z8428, Z8425, Z7366, Z7671, Z7700, Z8074, Z8085
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[lgmayka]

For a pure genealogist, the primary advantage of a SNP pack is to get a deep, precise haplogroup classification which rules out anyone known to belong to a different classification.

For someone also interested in ancient ancestry, the SNP pack's resulting haplogroup classification encodes the person's patrilineage history, from "Adam" down to (roughly) a couple thousand years ago.

[dna]

For a pure genealogist, the primary advantage of a SNP pack is to get a deep, precise haplogroup classification which rules out anyone known to belong to a different classification. [----]

And that might be very helpful, since STR can easily mutate back giving false leads.

Mr. W