SUMMARY OF SNP - September, 2013

Classification of SNP: Very small branch that is currently private. Son of L513. This analysis is very speculative in nature for numerous reasons: 1) only one submission have tested positive to date; 2) the positive submission has a Swedish origin which is not common for R-L21; 3) with only one positive submission there are a very large sixteen L21 off modal mutations (six makers that were low frequency above 50 % matches were removed from the CTS2687 fingerprint); 4) With no markers removed, the positive test submission is very genetically isolated with the closest match being 50 % of the fingerprint and genetic distance of 15. With more testing results available, the CTS2687 fingerprint will definitely have to be fine tuned.

Speculative preliminary estimated breadth of SNP: 10 = 1 x 90 % (10 of 10) + 1 x 70 % (9 of 10) + 16 x 20 % (8 of 10) + 99 x 5 % (7 of 10).

Dominant Surnames (positive): Olofsson (1), Burton (7) and Dukes (2).

Date that SNPs were discovered: June, 2013.

Source of SNP: Nat Geo test, FTDNA ID 272519, Y-Search ID 4UBKT, Surname Olofsson.

Number of Positive Tests (67 markers): Only one known.

Number of Broad Negative Tests (67 markers): Twenty-one known (only L513 submissions).

Number of Negative Tests within Fingerprints (higher than 70 %): None.

Pending Tests (within Fingerprint): None known.

TRENDS OF TESTING CANDIDATES

CTS2687 Fingerprint

Note that the number of known testing candidates does not appear to be similar to most L21 SNPs where the number of testing candidates declines down to 70 % matches, remains low between 50 and 70 % and then sees a sharp rise as non-CTS2687 submissions dominate the under 50 % matches. CTS2687 appears to be very genetically isolated. Due to the nature of the testing candidate curve (immediate rise in matches), CTS2687 greatly overlaps with L1333 (L513), L1066 (Z253) as well as several other YSNPs.

ISOGG Status - Prove relationship of CTS2687 to other L21 SNPs

Requirements of proving CTS2687 position on the ISOGG haplotree have not been met for proving the relationship to other known L513 sons and currently fails for the genetic diversity requirements (only one positive submission to date).

DNA FINGERPRINT & SIGNATURES

Note: The CTS4687 fingerprint is very preliminary in nature and will require fine tuning as additional testing reveals the true scope of CTS2687. Note: the CTS2687 fingerprint shares six of ten mutations with L1333 (L513) and five of ten mutations with L1066-B3 (Z253). Most CTS4687 matches will actually be L1333 or L1066 positive (mostly L1066).

CTS2687 Fingerprint (L21 Off Modal Mutations):

Markers 1 to 37: 385a >= 12, 439 >= 13, 458 <= 16, 464c <= 16, 460 <= 10, 456 <= 15 and 576 <= 17 (7 mutations).

Markers 38 to 67: 406S1 >= 11, 444 >= 13 and 617 >= 13 (3 mutations).

CTS2687 Signature (R-L21 Plus): None Found (very isolated YSNP).

TESTING CANDIDATE RECOMMENDATIONS

For more details of all the possible testing candidates, download the CTS2687 spreadsheet in the DNA Results pull-down menu. Use this spreadsheet for recommendations that are listed below:

1) Since both L1333 and CTS2687 share six of ten L21 off-modal mutations and are both sons of L513, it is highly recommended that the positive submissions test the other YSNP to see if there is a father - son relationship between these two L513 sons. Submission 272519 needs to test for L1333 and submission 117944 or 125313 needs to test for CTS2687.

2) Burtons (7) and Dukes (2) dominate the higher fingerprint and lower genetic distance matches. One from each group should test for CTS2687: Burtons (132594, 259679, 85748, 147870, 56253, 123876 and 71948) and Dukes (109643 and 193243). These tests are speculative and only have around a 30 % chance of testing positive.

3) For 8 of 10 fingerprint matches, lower genetic distance matches should be tested (genetic distance of 12 or less). These include McElroy (157233), Browne (N83312), Chism (118325) and Goff (192630). These are even more speculative at around 20 % chance of testing positive.

4) For 7 of 10 fingerprint matches, lower genetic distances matches should be tested (genetic distance of 11 or less). See the spreadsheet for these submissions. These are even more speculative testing at around 10 % chance of testing positive.