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Estimating Grandparents DNA from Grandchildren? #dna
Seth Bittker <sbittker@...>
For purposes of genetic genealogy it would be wonderful to have DNA >from
my great-grandparents up on FTDNA or Ancestry. As they died a long time ago, this is seemingly a fantasy. However, it seems to me that technology could be developed to obtain a good approximation of my great-grandparents' autosomal DNA based on the autosomal DNA of their surviving grandchildren. Specifically it seems to me if one were able to get test results >from a number of their grandchildren, one could then find which sections of DNA are common between grandchildren >from different siblings. As the different grandchildren combinations likely would have different areas of overlap, by combining the areas of overlap across the sets of grandchildren, one could obtain a large number of sections of overlap for autosomal DNA which would very likely be >from their grandparents. Admittedly one would not know which autosomal DNA section came >from which grandparent, but this could even be refined by looking at DNA results of descendants of each grandparents' siblings. In addition genetic relationships between in-laws and others in the tree could be an issue, but with additional research this problem could be minimized as well. Are there any tools that do something like this yet? If not, is anybody working on developing technology like this? Seth Bittker Researching: BITTKER / BLAKHARZH, TOKARSKY / LEIBOVITCH - Aleksotas REZNITSY, LINKOVSKY - Babtai GROSSMAN, MIROSLAVSKI - Prienai ROTH - Onod HIPSCH, VEIS - Hernadszentandras
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Israel P
I think what you want is Kathy Johnston's Visual Phasing.
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http://forums.familytreedna.com/showthread.php?t=36812 Blaine Bettinger discussed this at the GRIP course in July. Israel Pickholtz
On 13 Aug 2016 at 0:04, DNA Testing digest wrote:
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