Saturday, 15 December 2018

Apples and oranges

I'm really concentrating on my (paternal) Amelia MILLAR's brickwall's matches, honest.

But I'm also trying to snapshot my chromosome mapping "progress".

Which appears to be woeful.
Must try harder.
Here are two snapshots approximately about 18 months apart of the Maternal segments I've allocated to a grandparent.  (Unlike last time I posted a chromosome map update, this time a paternal map will follow, shortly.)

The apples/oranges title of this post being because the more recent map only shows segments over 15cMs, so I haven't necessarily really regressed with fewer mapped segments over all.

The data comes from my matches on all the testing companies who provide the required level of detail (segment level matches by chromosome), so excludes any matches found on Ancestry unless the matches have also transferred to GEDMatch, or tested at another company, or transferred their Ancestry file to MyHeritage or FamilyTreeDNA. (Some links/thoughts about testing/transferring here)
It is using extracted segment data from my (private) DNA database of matches run through Kitty Cooper's Segment mapper, aggregating it up to the allocated grandparent.

The equivalent (Dec 2018) data mapped in DNAPainter follows, adding the information that the 443 segments mapped cover about 30% of my DNA.
Can definitely to better.
Wonder if adding in the Paternal will add an equivalent amount of data?
See next post, which may take a while checking out the Paternal / Suspected Paternal, but as yet unmapped to Grandparent/MRCA* segments.
* MRCA = Most Recent Common Ancestor

Maternal chr map by grandparent: Dec 2018
Dec 2018: over 15cMs

Maternal chr map by grandparent: Jun 2017 over 12cMs
Jun 2017: over12cMs

DNAPainter Maternal by Grandparent Dec 2018 : over 15cMs

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