East Carolina Roots DNA Project



Beaufort County	Carteret County	Craven County	Currituck County	Dare County	Hyde County	Jones County	Lenoir County	Onslow County	Pamlico County	Pitt County

The East Carolina Roots DNA Project

Click to see Y-DNA Results Chart.

How can we determine when individuals of a certain surname shared a common ancestor?

The following is a table from FamilyTreeDNA. It looks at the probabilities for how many generations back you are likely to share a common ancestor with someone else based on the number of matching markers in your Y-DNA result:

Table 1. Probability for Most Recent Common Ancestor (MRCA)

Number of matching markers	50% probability that the MRCA was no longer than this number of generations	90% probability that the MRCA was no longer than this number of generations	95% probability that the MRCA was no longer than this number of generations
10 of 10	16.5	56	72
11 of 12	17	39	47
12 of 12	7	23	29
23 of 25	11	23	27
24 of 25	7	16	20
25 of 25	3	10	13
35 of 37	6	12	14
36 of 37	4	8	10
37 of 37	2 to 3	5	7
65 of 67	6	12	14
66 of 67	4	8	9
67 of 67	2	4	6

For more information on which level of testing you may need (12, 25, 37 or 67 markers), click here.

For detailed information on available tests, click here.

Receive discounted rates on DNA testing through East Carolina Roots!
Click here to join the East Carolina Roots DNA project.