How accurate is 23andMe's YDNA haplogroup estimate?

**Bellbeaking** · 08-23-2019, 09:19 PM

Originally Posted by Adoptee

What do you mean by accurate but not precise?

It will not go very deep. Will tell you e.g. R1b DF13 but not any deeper

**TheOldNorth** · 08-23-2019, 09:27 PM

well it said i was I-L38 and that's from central Germany where my direct paternal ancestors come from

**Jana** · 08-23-2019, 09:32 PM

It is accurate.

**Adoptee** · 08-24-2019, 01:30 AM

im wondering why my haplogroup from northern Germany is a Spanish one then. I wonder how that happened

**Wegner** · 03-12-2020, 05:02 AM

23andme does not test for as many SNPs on the y-chromosome as you would get from a full y-dna test. What they do test for is accurate.

For example, 23andme says that I am I-Z58. However, I got my full genome sequenced by Dante Labs and sent the files to yfull, who determined that I am a subclade of I-Z2040 (which I will not specify because there is only one other person in their database who matches right now).

Since I-Z2040 is in fact a subclade of I-Z58, 23andme is accurate. But it is not detailed.