I am baffled by the match described below. Please, can someone with a better understanding of the x-chromosome help me?
F and M are the father and mother, respectively, of Daughter 1 (D1) and Daughter 2 (D2).
F and his children have a fairly strong autosomal match (38 cM in one segment) with Cousin (C).
M and C have no autosomal or x match.
F and C have no x match.
From triangulation it is clear that the match between F and C is on F's father's side, not his mother's.
Yet, D1 and D2 both show x matches of the same 7.9 cM segment with C. How is this possible, since the x that F passed on to his children was from his mother?
Thanks a lot.
F and M are the father and mother, respectively, of Daughter 1 (D1) and Daughter 2 (D2).
F and his children have a fairly strong autosomal match (38 cM in one segment) with Cousin (C).
M and C have no autosomal or x match.
F and C have no x match.
From triangulation it is clear that the match between F and C is on F's father's side, not his mother's.
Yet, D1 and D2 both show x matches of the same 7.9 cM segment with C. How is this possible, since the x that F passed on to his children was from his mother?
Thanks a lot.
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