How does genetic ancestry testing work?

Related questions

1. How accurate is DNA matching?
2. How accurate is ancestry com DNA test?
3. How many years is 7 generations?
4. Can DNA test wrong?
5. Do siblings have the same DNA?
6. How can DNA test determine ethnicity?
7. Can you brush your teeth before a DNA test?
8. Can a man request a DNA test?
9. How far back does DNA testing go?
10. Can you cheat a home DNA test?

Tags

1. #methods
2. #shares
3. #person
4. #ancestry
5. #determine
6. #different
7. #about
8. #paternal
9. #companies
10. #which
11. #database
12. #several
13. #finding
14. #offer
15. #populations
16. #sequences
17. #genetic
18. #certain
19. #testing
20. #services
21. #maternal
22. #match
23. #information