Using the tools at GENESIS (from GEDmatch):
the Basics for Finding Relatives
a free third party site for DNA test comparisons and more
by Kitty Cooper, blogging at blog.kittycooper.com
The video of my more advanced talk about GENESIS will be available soon from http://i4gg.org/
This talk will not cover ancestry composition (aka admix), my slides on that are http://slides.com/kittycooper/gedmatch#/
I also have many many blog posts about GEDmatch, see http://blog.kittycooper.com/tag/gedmatch/
All my slides are online at slides.com/kittycooper
and the links in my slides are all clickable!
GEDmatch was founded to let you compare autosomal DNA results from different companies with powerful analysis tools
The problem became that the various companies changed to newer chips that test for different, not completely overlapping, sets of SNPs
So they developed a new template for comparing - GENESIS !
Click here to register and set up a password (your username will be your emai)
Click here to send an email to support
the new site is at https://genesis.gedmatch.com
if you are already registered at gedmatch, the same login will work on GENESIS
This is the name people will see for you
Basic Home Page at GEDmatch
GENESIS
Only the legacy GEDmatch site has the more information box with various links - the FAQ is quite good - https://www.gedmatch.com/gedwiki/index.php?title=Main_Page
My Tier 1 Home Page at GENESIS
There is a long form to upload your DNA
23andme testers will know their halogroups
Notice all the companies they can handle!
Click YES
Final section of upload form
While you wait for your kit to "tokenize" so you can use the ONE TO MANY tool
You can run these starred tools
The DNA File Diagnostic Utility output in the GENESIS version
They slim the kits by removing the homozygous SNPs
GEDmatch analysis of brother's Ancestry (previous chip)
GENESIS analysis
GEDmatch analysis of new Ancestry chip
new Ancestry chip
old Ancestry chip
Run this tool next - AYPR
Multiply the shared cMs by 4 to get the approximate amount the parents share - this person's parents are 5th cousins
Basic Home Page at GEDmatch
GENESIS
Please upload a privitized GEDCOM with about 10 generations of ancestors for your kit
GEDCOM + DNA matches
There can be a lot of information on the first page, the individual, in a gedcom
But typically we just click to see the pedigree
Top half of my Aunt's pedigree, the clickable little tree shows where a match to another GEDCOM has been confirmed
2 GEDCOMs comparison
The most important tool for finding relatives is the one to many,
Another great tool is the "In Common With" (ICW) called People who match both or 1 of 2 kits
The basic one-to-many shows the kits that match the kit number you give it with the overlap indicating how many SNPs are in the comparison, red means too few, and it shades down from there
You may want to use 10cM or even 20cM for the minimum largest autosomal segment to make a faster and shorter list
Beta Basic One-to-Many - includes tag groups https://blog.kittycooper.com/2017/04/using-gedmatch-tag-groups/
Beta Basic One-to-Many - includes tag groups https://blog.kittycooper.com/2017/04/using-gedmatch-tag-groups/
Every column is sortable, I often sort by largest segment
Looking at a few matches - click the largest segment to see the one-to-one
Detail from my one to many
One to one with numbers and graphics (partial page)
My double third AJ cousin
One to one without the graphics, position only
My double third AJ cousin
One to one without the graphics, position only but NO HARD BREAKS
My double third AJ cousin
Siblings have fully identical regions (FIRs) - the green bars
FIR only version of my comparison of my brother and my Ancestry kits
The ICW function:
"People who match
one or both kits"
Comparing my Dad and my 2nd cousin with threshold 8cM
Phasing
- If you have at least one parent tested then you can separate what you got from each parent
- If the maternal or paternal phase can be determined the values will be assigned else the original unphased values will be kept
LAZARUS lets you create a kit for comparisons for a person who cannot be tested from their close relatives
Multiple Kit Analysis is only on the Tier 1 menu - Tier 1 members can also get there by checking the boxes in the one to many tool or in the kits that match two kits tool and clicking Visualization Options
The multiple kit selection form lets you add more kits by typing or selecting from your list of kits in a drop down
So many options for Multi Kit Analysis
You can do a matching segment search for just the selected kits
You can do a triangulation for just the selected kits
Form to do a triangulation, enter your kit number, the defaults are fine
Sorted by Chromosome and Position with Graph
Sorted by Kit Number has more information and can be resorted in a spreadsheet
My Chromosome Browser at Genesis
