How can her relationship to son Richard III be "Confirmed with DNA"?

+9 votes
275 views
A relationship cannot be marked "Confirmed with DNA" when DNA for only one person is known. Wouldn't we need to have her DNA also? Or at least a triangulation with others?

Thanks!
WikiTree profile: Cecily of York
asked in Genealogy Help by Liz Shifflett G2G6 Pilot (312k points)
retagged by Maggie N.
We have 3 testees with matching mtDNA - Michael Ibsen, Wendy Duldig and some unidentified bones dug up in a car park.
Thanks! I knew about his bones, but I missed the info about three testees matching.
This mitochondrial dna testing that was done at the University of Leicester certainly got a huge amount of news coverage.

https://www.le.ac.uk/richardiii/science/extractionofdna.html

2 Answers

+15 votes
 
Best answer
If you are talking about  Richard III and his identification, with DNA, they did two things, one try to trace  a living Y chromosome descendant, that would carry the same Y as Richard, this didn't work as none of the men that were supposed to share the same Y did.  However there is Mitochondrial DNA, this is the DNA located in mitochondria, this is only passed from mother to daughters, it is present in males  but they cannot pass it down to their children, whereas if you are female you have the same mitochondrial dna as your mother, grandmother etc etc, it does mutate a little over time. John Ashdown Hill traced an all female lineage  from one of Richard III sisters, Anne down to  Joy Ibsen, she died in 2008, but when her son was tested to compare with Richard III, it matched, the only person that this matching Mitochondrial DNA could have come from was Cecily of York.
answered by Anonymous Anonymous G2G6 Mach 2 (21.9k points)
selected by Andreas West
+11 votes

See https://www.wikitree.com/g2g/610467/they-are-the-scientific-literature-soon-they-cant-wikitree?show=610467#q610467

We will work on an acceptable way to get Ibsen’s and Duldig’s mtDNA information back into WikiTree.

answered by Peter Roberts G2G6 Pilot (448k points)

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