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Cardwell

for everyone with CARDWELL ancestry and DNA
  • 80 members

About us

This project was first launched in June 2006. Since then, considerable progress has been made with Y-DNA especially with the introduction of Big-Y which looks at SnP's (mutations on the Y-chromosome).  These mutations help date the time to a common male ancestor.  This is really useful to understand how the different male lines connect with each other.

Y-DNA test differences:

STRs and SnPs:

FamilyTreeDNA offers several STR tests (Y-37, Y-67, Y-111). Relationship between STR matches is determined by genetic differences (GD) on the Y chromosome. When a GD becomes too great (around 10% or more of the number of markers tested), it is unlikely that the two people share a common ancestor within a genealogical timeframe (i.e. since about 1,200 C.E.). STR test results will provide you with a predicted haplogroup.

SnP (snip) tests look at mutations on the Y chromosome. These results reach beyond a genealogical timeframe and can leapfrog over genealogical brick walls. SnP testing will confirm a haplogroup.

Big-Y:  FamilyTreeDNA’s main SnP test offering is the Big-Y.  It is the most informative and conclusive Y-DNA test. An upgrade (from Y37 or Y67) to Big-Y includes Y-111 results for free.

Where to start? A basic Y-STR test will connect you with your DNA family. For more information, consider upgrades until you get to Big-Y. Watch for sales that occur year-round, often at holidays.

  • The genealogist's test of choice for Y-DNA is the Big-Y.