tag:blogger.com,1999:blog-4773058005679938889.post1849136616362726119..comments2023-07-06T08:55:09.782-07:00Comments on Your Genetic Genealogist: Known Relative Studies with 23andMe: Second Cousins or Half Second Cousins? (2nd Cousins, Part Three)Your Genetic Genealogisthttp://www.blogger.com/profile/14696248341534125135noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-4773058005679938889.post-65501457718543341292014-05-24T01:28:48.399-07:002014-05-24T01:28:48.399-07:00I have a question,if my great grandmother had two ...I have a question,if my great grandmother had two children but from different fathers a boy and a girl,then the two children grow up and also have their own children who are both girls,which would make them half first cousins. Now the two girls grow up and also have children,one having a boy and the other having a girl,would they then be half second cousins to each other and would they be closely related by blood and would they be from the same generation?Anonymoushttps://www.blogger.com/profile/16258811621274173277noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-3565274605911671192014-05-24T00:13:48.180-07:002014-05-24T00:13:48.180-07:00I have a question,now suppose my great-grandmother...I have a question,now suppose my great-grandmother has two children but from different fathers, then theywould be half brother and sister. Now the children grow up and also have children, the brother has a doughter and the sister has a daughter, then the two children become haf first cousins. Now the half first cousins also have children, one has a boy and the other has a girl, would they be half second cousins? and how close will they be in terms of blood relation, would they be really your relatives and could it be possible to have a relationship with them? I hope i'm making sense and not confusing anyone, plese help?Anonymoushttps://www.blogger.com/profile/16258811621274173277noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-33906025114980216812014-05-24T00:06:34.434-07:002014-05-24T00:06:34.434-07:00I have a question, say my great-grandmother had tw...I have a question, say my great-grandmother had two children boy and girl but from different fathers which would make them haf brother and sister. Now the boy grows up and has a daughter and also ther boys sister grows up and has a doughter, which would make the children half first cousins. Now the two first falf cousins also have chidren, then would they be half second cousins? and also how close in terms of blood relation would they be, would they be considered related at all, although they share a great grand mother?Anonymoushttps://www.blogger.com/profile/16258811621274173277noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-4001939697088329342011-08-25T08:48:09.201-07:002011-08-25T08:48:09.201-07:00Thanks, Ann.
@MEJ- Good luck with your research an...Thanks, Ann.<br />@MEJ- Good luck with your research and thanks for commenting.<br />CeCeYour Genetic Genealogisthttps://www.blogger.com/profile/14696248341534125135noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-20029811694912342542011-08-22T12:58:13.897-07:002011-08-22T12:58:13.897-07:00well, i could only contact my half-sister to submi...well, i could only contact my half-sister to submit a sample, which she did but does not in other ways participate, so i have a little info to compare, so i am both envious and interested on a scientific anthropological perspective of your discussionMEJhttps://www.blogger.com/profile/06175420473680473888noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-2150414824017296692011-08-21T12:25:58.272-07:002011-08-21T12:25:58.272-07:00On further review, I suspect the segment on chromo...On further review, I suspect the segment on chromosome 22 missing in sister #1 is just below the threshold for declaring a match. The fact that the segments in the cousin and sister #2 are slightly offset *might* be a sign of fuzzy boundaries, although it would require access to raw data to analyze the details.DNACousinshttps://www.blogger.com/profile/16853537836104702338noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-30318116030774234202011-08-21T11:10:41.449-07:002011-08-21T11:10:41.449-07:00I sure do, Joan.
http://www.yourgeneticgenealogis...I sure do, Joan. <br />http://www.yourgeneticgenealogist.com/2010/09/known-relative-studies-with-23andme.html<br />There is a ~50% chance of detecting their shared DNA if they are fourth cousins.<br />Thanks for the comments, ladies!<br />CeCeYour Genetic Genealogisthttps://www.blogger.com/profile/14696248341534125135noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-12937516503073540722011-08-21T11:05:42.580-07:002011-08-21T11:05:42.580-07:00This is interesting! Do you have a chart or table...This is interesting! Do you have a chart or table showing the expected percentage of DNA sharing for the various levels of cousins? <br /><br />My sister has just tested and so has her husband (who we found out years ago that he is a distant cousin - fourth cousin I think).Joan Millerhttps://www.blogger.com/profile/14279245093509647026noreply@blogger.comtag:blogger.com,1999:blog-4773058005679938889.post-17388287191787472192011-08-21T04:30:51.802-07:002011-08-21T04:30:51.802-07:00CeCe, I love these posts comparing the DNA among y...CeCe, I love these posts comparing the DNA among your sisters and cousins. It really helps make sense of the concepts.Toniahttps://www.blogger.com/profile/14688040686852110671noreply@blogger.com