In the last 2 blogs, I wrote about segments and crossovers. In this one I am continuing on with James Line Segments. The James Line is from James Frazer b. in the early 1700’s from North Roscommon, Ireland. I am looking at Chromosome 14, because there seems to be a lot going on there. Here are some of the Frazer matches from my master list of matches from testers in the Frazer DNA Project:
Not all of these matches will come into play, because we are looking at the family of Jonathan, Janet and Joanna. Here Jonathan matches JFS on the Michael Frazer Line b. 1764 (a branch of the James Line). Janet matches the same person at 2 different places. Janet and Jonathan match BZ their 2nd cousin at differing levels. Also Jonathan matches BR from the Archibald line (brother of James Frazer) at a smaller amount. This may or may not hold up.
Remember, we can do this analysis because siblings have what are called Fully Identical Regions (FIRs). This means that they match their same paternal and maternal grandparents (but we don’t know which initially). Then by comparing the Half Identical Regions (HIRs) and places they don’t match, it is possible to map out all 4 grandparents. With matches to known people, it is possible to fill in which grandparent is which.
Chromosome 14 appears to be more simpler than my earlier examples:
Here, there are only 5 crossover points. The crossover is where the DNA recombines. Janet has only one crossover point and Jonathan and Joanna each have 2. Note above that Jonathan (1) and Joanna (3) have a FIR in the first segment indicated by the green bar in the middle row. That means they have the same Paternal and Maternal grandparents. I’ll give those grandparents a green and blue color for both Jonathan’s (1) and Joanna’s (3) DNA segment below. 
The crossover point is where something is going to change due to DNA that got recombined from Joanna’s family’s grandparents via their parents. I suppose you might say we are recreating how this family was formed by the different combinations of their grandparents’ DNA. I can’t extend Jonathan’s grandparents at this point (at crossover 1). I can extend Joanna’s as her crossover point doesn’t occur until line 3 (which is her crossover or recombination point).
Now note in the gedmatch browser comparison above that Janet and Joanna have no match in the first 2 segments. That means that Janet will have the opposite grandparents in those segments shown as being orange and purple.
Next, I see that in the 3rd segment, Joanna matches Janet perfectly (FIR). We will note that and extend Janet’s segments to the right hand side as she only has one crossover point.
Next I filled in some opposite regions between Janet and Joanna and Jonathan to Janet.
However, note that in the comparison between Jonathan and Janet, there is something odd.
In the third segment, there is no match as shown by a grey underneath (no blue). However, on the top there are no red marks. I though that it was too easy. Next, I will add an HIR from Jonathan to Janet in the last 2 segments.
Next Jonathan and Joanna have a no match on the last chromosome, so they are opposites. There seems to be no easy solution for the middle part of Jonathan’s Chromosome 14 – or rather there could be more than one solution, so I’ll just pick one for now and see how it fits with the matches.
And there you have my version 1 of Jonathan and his sisters’ Chromosome 14. It doesn’t look that great. Janet’s chromosome looks too symmetrical. Also Jonathan has one of his crossovers on Joanna’s crossover point (3).
Now for the Frazer DNA Project matches to Jonathan and family.
Here’s where the puzzle begins. We don’t know which of the 4 colors that the Frazer could be. That could be either
Janet has matches from 32-50; 59-100; and 92-101. This means I drew Janet wrong. I have her with a break in the middle of these. That is, unless, the match with JFS is a false match.
Jonathan has matches from 80-99; 92-101; and 99-102. That could either be green or purple, but his first match at 80 would make it look like the green. I’ll give it another try with Janet having her green be the Frazer for the whole length. This is what I came up with:
That looks better. Now Janet’s segments are not so symmetrical and Jonathan’s crossovers are at his own crossover points. Joanna has a crossover on Janet’s crossover point, so maybe she should have solid orange, but that would cause other inconsistencies.
Now I’ll add the Frazer to the green areas and Seymour grandparents in orange showing where some of our Frazer DNA testers match.
I know that Joanna is looking for other relatives to test on her mother’s side. So once those DNA results are in, that will further confirm which maternal grandparents the blue and purple segments belong to.
This was not as easy as I thought it would be.