Using Family Finders chromosome browser, I changed the default segment to 1cM & downloaded all the segment data from my matches to a CSV file. There's is a limit of 5 matches, so I combined all into one file. I sorted the entire file by chrom#, beginning seg#, and end seg#. I have a total of 89 matches in Family Finder, and 846 segments.
Matching segments less than 5cM are supposed to be statistically insignificant, but some of the smaller matching segments are hard to ignore:
on chromosome 5, I have 20 different people who match me from 129643803 to 132242229 (2.39cM) and 8 matches on chr10 from 95868647 to 97209409.
Questions: Shouldn't these matches be considered significant based on statistical odds? Do they indicate some racial origin or one common ancestor or geographical area? why are these matching segs area so stable from generation to generation? I am very curious and don't really know enough about the science of genetics to explain this.
Randi Petrone
H3ah
Matching segments less than 5cM are supposed to be statistically insignificant, but some of the smaller matching segments are hard to ignore:
on chromosome 5, I have 20 different people who match me from 129643803 to 132242229 (2.39cM) and 8 matches on chr10 from 95868647 to 97209409.
Questions: Shouldn't these matches be considered significant based on statistical odds? Do they indicate some racial origin or one common ancestor or geographical area? why are these matching segs area so stable from generation to generation? I am very curious and don't really know enough about the science of genetics to explain this.
Randi Petrone
H3ah
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