I understand that in order for a match on the X to be meaningful, it should be more than 7cm...but I'm unclear on whether that's the total number or a specific segment.

For example, I have one alleged second-to-fourth cousin with whom I'm especially eager to figure out the match. Our GedMatch X-DNA Comparison shows these segments:

3.2cm, 286 SNPs

4.2cm, 307 SNPs

3.3cm, 235 SNPs

3.7cm, 299 SNPs

4.6cm, 338 SNPs

3.3cm, 204 SNPs

So we have 22.3cm total...but our largest segment is 4.6cm.

We are both female. Do we really match on the X, or is this just noise?

For example, I have one alleged second-to-fourth cousin with whom I'm especially eager to figure out the match. Our GedMatch X-DNA Comparison shows these segments:

3.2cm, 286 SNPs

4.2cm, 307 SNPs

3.3cm, 235 SNPs

3.7cm, 299 SNPs

4.6cm, 338 SNPs

3.3cm, 204 SNPs

So we have 22.3cm total...but our largest segment is 4.6cm.

We are both female. Do we really match on the X, or is this just noise?

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