For example my father's chromosome 3 (which he got from his mother) from 50 million to 80 million is most similar with persons from Iberia. My father's chromosome 3 (which he got from his father) from 50 million to 80 million mostly matches people from Scandinavia. Is it likely that area of my father's chromosome 3 will appear to mostly match people from "Northern France" (because it is between Iberia and Scandinavia? If so, then my chromosome 3 from my father from 50 million to 80 million is most similar with persons from "Northern France". Let us say all of my mother's ancestry is from Japan and the chromosome 3 which I received from her mostly matches people from Japan on the area from 50 to 80 million. What could my sister's admixture look like in that same area? How might it appear different from mine? Could she look mostly "French" and I look mostly east Asian from 50 to 80 million? Is there a better way to ask this question? Thanks and sincerely, Peter Peter J. Robertshttp://www.wikitree.com/
Peter I think that this is what you are asking about. Each person has two different copies of chromosome 3 and the other autosomes, this gives two separate values for each segment, you will not have an average of the two values. Your sister will have two separate values which may be very different than what you received. The Dna you inherited passed through your parents but it is various portions of each of your grandparent's Dna. My full sister received about 9% more of our grandparents British-Irish Dna than I received while I received more Dutch German. Because more people with UK ancestry have tested than people with German ancestry it gives my sister about 10% more matches than I have. It matters which testing company you are using. At 23andme my full sister and I share 54.4% of our Dna with .68Gb completely identical while at Ftdna they do not include completely identical so my full sister and I show as only sharing about 36% of our Dna. These are 23andme comparisons of my grandchildren with each of their grandparents. The estimates say they should share 25% with each grandparent Ethan vs. Robert, 21.9%, 1629 cM, 23 seg (zero X-chromosome) Ethan vs. Janice, 25.4%, 1892 cM, 26 seg (zero X-chromosome) Ethan vs. Rocky, 22.0%, 1638 cM, 24 seg (79cM X-chromosome, 2 seg) Ethan vs. Vivian, 28.0%, 2082 cM, 37 seg (103cM X-chromosome, 3 seg) Kalea vs. Robert, 24.1%, 1792 cM, 25 seg (zero X-chromosome) Kalea vs. Janice, 25.7%, 1909 cM, 26 seg (full X-chromosome, 182cM) Kalea vs. Rocky, 28.1%, 2089 cM, 23 seg (full X-chromosome, 182cM) Kalea vs. Vivian, 21.9%, 1631 cM, 25 seg (zero X-chromosome) Shay vs. Robert, 21.8%, 1625 cM, 23 seg (zero X-chromosome) Shay vs. Janice, 28%, 2085 cM, 24 seg (full X-chromosome, 182cM) Shay vs. Rich, 19.7%, 1466 cM, 24 seg (full X-chromosome, 182cM) Shay vs. Marcy, 30.1%, 2236 cM, 29 seg (zero X-chromosome) RPaine -----Original Message----- From: Peter J. Roberts via Sent: Friday, October 30, 2015 8:00 AM To: genealogy-dna-l@rootsweb.com Subject: [DNA] Does atDNA ethnic admixture work this way? For example my father's chromosome 3 (which he got from his mother) from 50 million to 80 million is most similar with persons from Iberia. My father's chromosome 3 (which he got from his father) from 50 million to 80 million mostly matches people from Scandinavia. Is it likely that area of my father's chromosome 3 will appear to mostly match people from "Northern France" (because it is between Iberia and Scandinavia? If so, then my chromosome 3 from my father from 50 million to 80 million is most similar with persons from "Northern France". Let us say all of my mother's ancestry is from Japan and the chromosome 3 which I received from her mostly matches people from Japan on the area from 50 to 80 million. What could my sister's admixture look like in that same area? How might it appear different from mine? Could she look mostly "French" and I look mostly east Asian from 50 to 80 million? Is there a better way to ask this question? Thanks and sincerely, Peter Peter J. Robertshttp://www.wikitree.com/ ------------------------------- To unsubscribe from the list, please send an email to GENEALOGY-DNA-request@rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message