Author Topic: Help with understanding DNA Painter  (Read 289 times)

Offline Ellenmai

  • RootsChat Veteran
  • *****
  • Posts: 875
  • Census information Crown Copyright, from www.nationalarchives.gov.uk
    • View Profile
Help with understanding DNA Painter
« on: Tuesday 09 June 20 11:35 BST (UK) »
On the DNA Painter site, for instance it states Great-Aunt/Uncle then underneath 850, then underneath that figure 330-1467. I understand the range of matching cM is within the second figures but what is the 850? There is no mention of segments on the graft, how important are these & can they help to narrow down the exact match  ???

Offline Spidermonkey

  • RootsChat Marquessate
  • *******
  • Posts: 5,538
  • Census information Crown Copyright, from www.nationalarchives.gov.uk
    • View Profile
Re: Help with understanding DNA Painter
« Reply #1 on: Tuesday 09 June 20 12:06 BST (UK) »
I can't help you with much, but I believe the 850 figure is the average/median figure for the range below.

Offline Ellenmai

  • RootsChat Veteran
  • *****
  • Posts: 875
  • Census information Crown Copyright, from www.nationalarchives.gov.uk
    • View Profile
Re: Help with understanding DNA Painter
« Reply #2 on: Tuesday 09 June 20 12:11 BST (UK) »
Thanks Spidermonkey, that would make sense as the match I have is 468 cM across 19 segments & I was trying to work out if the person was a Great Niece or Great Great Niece.


Offline Craclyn

  • RootsChat Marquessate
  • *******
  • Posts: 3,462
  • Census information Crown Copyright, from www.nationalarchives.gov.uk
    • View Profile
Re: Help with understanding DNA Painter
« Reply #3 on: Tuesday 09 June 20 12:56 BST (UK) »
If you put 468 into the box you will see the possible relationships and their probabilities. 468 is more likely to be a great great niece. A great niece would be closer to 850 cM.
Crackett, Cracket, Webb, Turner, Henderson, Murray, Carr, Stavers, Thornton, Oliver, Davis, Hall, Anderson, Atknin, Austin, Bainbridge, Beach, Bullman, Charlton, Chator, Corbett, Corsall, Coxon, Davis, Dinnin, Dow, Farside, Fitton, Garden, Geddes, Gowans, Harmsworth, Hedderweek, Heron, Hedley, Hunter, Ironside, Jameson, Johnson, Laidler, Leck, Mason, Miller, Milne, Nesbitt, Newton, Parkinson, Piery, Prudow, Reay, Reed, Read, Reid, Robinson, Ruddiman, Smith, Tait, Thompson, Watson, Wilson, Youn

Offline Gadget

  • RootsChat Marquessate
  • *******
  • Posts: 50,041
    • View Profile
Re: Help with understanding DNA Painter
« Reply #4 on: Tuesday 09 June 20 13:11 BST (UK) »
As a comparison, my niece and I share 1846 cM and her two children (grt niece and grt nephew)  share 1100cM and 836 cMs with me .


Gadget
Census &  BMD information Crown Copyright www.nationalarchives.gov.uk and GROS - www.scotlandspeople.gov.uk

Offline Ellenmai

  • RootsChat Veteran
  • *****
  • Posts: 875
  • Census information Crown Copyright, from www.nationalarchives.gov.uk
    • View Profile
Re: Help with understanding DNA Painter
« Reply #5 on: Tuesday 09 June 20 14:59 BST (UK) »
Thanks everyone for your help & explaining it in a way I can understand, as some of the sites I have been on I find beyond my comprehension. Looks like it's a Great, Great Niece then  :) Could I just double check one more thing please. If a 405cM DNA match from an 85 year old Male to a 75 year male is he a Great Great Uncle or a Half Great Uncle?

Offline Gadget

  • RootsChat Marquessate
  • *******
  • Posts: 50,041
    • View Profile
Re: Help with understanding DNA Painter
« Reply #6 on: Tuesday 09 June 20 15:04 BST (UK) »
It could be half 1st cousin or 1st cousin 1remove.

Check Painter again with that figure.


Census &  BMD information Crown Copyright www.nationalarchives.gov.uk and GROS - www.scotlandspeople.gov.uk

Offline Gadget

  • RootsChat Marquessate
  • *******
  • Posts: 50,041
    • View Profile
Re: Help with understanding DNA Painter
« Reply #7 on: Tuesday 09 June 20 15:06 BST (UK) »
This is what painter brings up for that amount of shared DNA. It shows the probability of various possible relationships.

Gadget
Census &  BMD information Crown Copyright www.nationalarchives.gov.uk and GROS - www.scotlandspeople.gov.uk

Offline Ellenmai

  • RootsChat Veteran
  • *****
  • Posts: 875
  • Census information Crown Copyright, from www.nationalarchives.gov.uk
    • View Profile
Re: Help with understanding DNA Painter
« Reply #8 on: Wednesday 10 June 20 11:19 BST (UK) »
Thanks very much Gadget, you have come to the rescue yet again  :)