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J Man
06-09-2013, 09:11 PM
I have been wondering about the ages of certain IBD segments that I share with my 1st cousin once removed. This cousin is fro the Finnish side of my family. I share a number of large segments with him which of course make sense but I am wondering how old they may be? For example the largest segment that i share with him is on chromosome 9 and it is 61.68 cM in size. Now this segment must have come down to both of us from our shared Finnish ancestors but how old may it be I wonder? These segments do not just appear out of nowhere they have to come from some certain ancestors correct?