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Old 29th October 2017, 03:27 PM
prairielad prairielad is offline
FTDNA Customer
Join Date: Feb 2011
Location: Canada
Posts: 2,023
Depending on size of X match, ignore it as it maybe false.
It is recommended that only X matches over 10cM will be valid.

FTDNA declares anyone a X match if segment is 1cM/500SNPs or greater.

Women to women X comparisons will have more false X matches(they each have two X values) then a male to male comparison (they only have one X value each). Algorithm is only selecting 1 value to match in a single sequence of values to create a matching segment.

Last edited by prairielad; 29th October 2017 at 03:32 PM.
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