Thanks for your clear description of cross-over points. I have one question please. Are the cross-over points on the chromosome you inherit from your father exactly the same as those on the same chromosome you inherit from your mother? For example, if the first cross-over point on my paternal chr1 is at location 13,100,409, will the first cross-over point on my maternal chr1 also be at location 13,100,409, and so on? Or is there no relationship whatsoever? Thanks.