My Y-String Values - 4/8/2013
|Upper row are DYS/DYF Markers
Bottom row are the determined values
DYF is RED
Why Y SNPs and how are they used?
SNPs - Single Nuclear Polymorphisms
SNPs support the discovery of the paternal lineage tree of mankind because:
1) They have a very strict father-son inheritance property
2) They are generally very stable, making for a high reliability tree
3) They have a very high opportunity for mutation, providing great resolution in the branching
SNPs are critical for their benefits.
1) SNPs can document a Y DNA tree that is very accurate, granular and comprehensive from the ancient to current genealogy.
2) Time to Most Recent Common Ancestor (TMRCA) estimations.
3) Eliminating false matches caused by STR convergence.
Using either SNPs counting or STR variance, TMRCA estimates are subject to error ranges and anomalies. All mutations can occur in fits and starts. There is a lot we don't know.
From FTDNA pages - auth unknown
DNA Big Y
Why Big Y Next Generation Sequencing for discovering SNPs?
Big Y is probably the most important Y DNA test that you can take because it goes beyond testing for public and known SNPs. Big Y discovers your own line of SNPs rather than just the known SNPs. Here's an analogy to help explain Big Y using the Lewis and Clark Expedition with an aviation twist.
Lewis and Clark's primary objectives included to explore and map the newly acquired territory, find a practical route across the western half of continent. They left St. Louis in 1804 and arrived at the Pacific Ocean late 1805. In this analogy, we think of the Pacific Coast as our genetic genealogy homeland, a place or status where our genealogically known family connects to the Y DNA tree of mankind. It is not the same for all of us, as each of our families has a distinctive location. Lewis and Clark founded what would be Fort Clastrop on the edge of Astoria, Oregon. From Astoria Column, a tower, you can see the Pacific Ocean, the Cascade Mountains and the Columbia River.
Single SNP testing is like flying a two seater from St. Louis and hoping to land in Astoria without knowing where Astoria is. The plane is low priced and reliable but has bad gas mileage. More importantly, Astoria may not even have coordinates on the map yet or a landing strip. This kind of approach is most applicable when someone who is highly probable to be on the edge of your genealogically known family has already done a Big Y test and has built a very tall tower or lighthouse to go with a new landing strip. That tower in Astoria could be thought as a super version of Astoria Column and it is built with 111 Y STRs.
Fixed SNP panel/pack testing is like flying the two seater from St. Louis hopscotching across the country, landing at a handful of small airports and getting out and taking a good set of photos at each location and then deciding the next location to fly to. Fixed SNP packs/panels are a good, low entry price way to go, but suffer the same problem any fixed SNP test suffers. What if your Astoria hasn't been discovered? Perhaps, even your State of Oregon has not been discovered. You also might have troubles if your eyesight or navigation system isn't so good. For good navigation you'd want to have at least 67 Y STRs although 111 is a better long term investment.
Big Y Discovery testing is like having a super high speed, fuel efficient jet traversing back and forth on multiple paths high across the sky on mostly clear days taking special photos of the countryside between St. Louis and the Pacific Coast. It is scanning over 11 million locations. If your Astoria turns out to be San Diego, Long Beach or Tacoma, that's okay. Big Y is accomplishing what Lewis and Clark were doing, mapping the route for settlers to follow in the form of lower entry price tests. Unfortunately, your family of genealogical record might not even be on the maps for the mass migration of settlers to come, that is without Big Y discovery testing. It's just a fact of the Y chromosome just as it is of the geography. The settlers won't go to a place when they don't know where it is or even know it exists.
Only a member of your genealogical family can discover your Astoria and erect the Astoria Column of 111 STRs for the settlers. We need leaders from each family.
I'm asking you to start thinking about Big Y if you haven't already. Be a lead-explorer! There are now several thousand Big Y results completed for the R1b haplogroup. It works. Big Y results can come in as quickly as 4 weeks (FTDNA uses an 8-10 week estimate). Pooling of resources at the project/family/surname levels can help share the cost, but be look for holiday, DNA Day, Father's Day sales promotions.
From FTDNA pages - auth unknown