How does DNA test show ancestry?

Related questions

1. How long does a DNA swab last?
2. What samples can be used for DNA testing?
3. How accurate is DNA testing for ancestry?
4. How much does my heritage com cost?
5. What's the difference between my heritage DNA and ancestry DNA?
6. What's better 23andMe or ancestry DNA?
7. Can a DNA test be done with just the father and child?
8. Is ancestry DNA better than 23andMe?
9. Can a DNA test be done without the father?
10. How many generations does DNA go back?

Tags

1. #reveal
2. #father
3. #misconception
4. #genetic
5. #mother
6. #tests
7. #analysis
8. #individual
9. #small
10. #ancestry
11. #common
12. #testing
13. #about
14. #snippets
15. #through
16. #information
17. #bolnick
18. #passed
19. #involve
20. #cannot