Using the tools at GEDmatch
More tools as of June 2016
a free third party site for DNA test comparisons and more
by Kitty Cooper, blogging at blog.kittycooper.com
Basic Home Page at GEDmatch
You can lower these to 500 SNPs and 6 cM
One to One of 23andme Dad versus Family Tree DNA Dad
Dad 23andme versus Dad ftDNA
Dad 23andme kit versus Family Tree DNA kit on left
Text
Dad 23andme kit versus 23andme kit on right
23andme File Analysis
Family Tree DNA File Analysis
DNA File Diagnostic Utility Output
My picks for the most useful functions to use with your DNA kit are starred
You may want to use 10cM or even 20cM for the minimum largest autosomal segment to make a faster and shorter list
One to Many Comparison
My Dad's One to Many Report, notice the different relationships - gen 1.0 are his children, 1.5 nephew, 2.6 1st1R
Relationship shared DNA at ISOGG wiki from Blaine Bettinger
Blaine Bettinger's chart from the ISOGG wiki entry on autosomal statistics, bookmark it and use it!
You can lower these to 500 SNPs and 6 cM
One to one with numbers and graphics (partial page)
My double third AJ cousin
One to one without the graphics
My double third AJ cousin
Siblings have fully identical regions (FIRs) - the green bars
My X match with my brother
You can select a group of kits to investigate from the one to many
There are many tools that can be run with your list of test kits
Segment CSV file
- The color coding is the size range in cMs (the graph is in base pairs).
- Each person is a different line rather than a different color
- Old branch means that it is match to a previous person, a white line shows where
The GEDmatch Chromosome Browser
The 2D chromosome browser compares everyone to one person (the first in the list if a group)
The 3D chromosome browser compares everyone to each other
The ICW function:
"People who match
one or both kits"
Comparing my Dad and my 2nd cousin with threshold 8cM
My GEDmatch home page has the tier 1 utilities
A paid membership gets some extra tools called "Tier 1"
Form to do a matching segment search, enter your kit number
Part of a Matching Segment Report
Form to do a triangulation, enter your kit number
Sorted by Chromosome and Position with Graph
Sorted by Kit Number has more information and can be resorted in a spreadsheet
Master Spreadsheet that I use for my Dad's comparisons
I put the triangulation information in the notes column and color the TGs
Questions?
Playing with GEDMATCH admix tools
Phasing
- If you have at least one parent tested then you can separate what you got from each parent
- For child kit number 'xxxx', paternal file will be generated as PxxxxP1 and maternal file will be PxxxxM1
- If the maternal or paternal phase can be determined the values will be assigned else the original unphased values will be kept
Questions?
Tools for analyzing your DNA data
- Are your parents related?
- What color are your eyes?
- Any errors in your DNA upload?
Questions?
GEDmatch Tools 2016
By Kitty Cooper
GEDmatch Tools 2016
Using the tools at GEDmatch 2016: a free third party site for DNA comparisons Presentation by Kitty Cooper http://blog.kittycooper.com
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