The way this is going, I am heading for a 24 part Blog on visual phasing.
Chromosome 18
Here’s a bit of glitch with Chromosome 18:
The fourth sibling comparison doesn’t line up with itself. I tried to go out of my spreadsheet without saving it to see if that would fix it and then lost my last 3 solved Chromosomes. Well, I should be able to recreate them easily by checking back on my Blogs.
Charting the Crossover Locations
I go through the crossovers again and put some numbers on them. This often results in changes to the crossovers that I originally put in:
The yellow indicates crossovers that I am unsure of.
Cousin Matches
Next, I’ll see which cousins match me and my siblings on Chromosome 18. It turns out that Catherine matches all six siblings:
I have circled all the crossovers. They all appear to agree with what I have except for Sharon’s first of three maternal crossovers. Also Jim’s first crossover appears to be on my line. However, these crossovers agree with my spreadsheet above. It turns out this was a good check as I need to update the chromosome map. I took out the D on the Chromosome Map above, but I feel there will need to be another crossover in that area eventually.
Here is my interpretation of Catherine’s matches with my family:
Looking for a Paternal Cousin
I have a few Frazer cousins that match in the same area. Here is Emily’s match from 35 to 52M:
This is the first time I haven’t had Hartley cousins to help me out:
Next I would like to fill out as much as I can to the left of the V and S crossovers. These are the ones I was unsure about. However, before I do that, it appears that I have a problem with what I have done above. Sharon should have Frazer DNA, but not Lori. Good thing I caught that. I did a glance on the Segment Map and that pointed out something was wrong.
This looks pretty good as far as I have gone:
This is my ‘all in one’ view.
Next I need to fill in to the left of the V-S crossovers.
I filled in Jon (F) based on him having a FIR with Heidi from the F & H comparison at the top. That means that he should have a Frazer/Lentz combination. However, I see that I missed a change for Jon on his F crossover to the right. I fixed that, and it looks like the crossovers were right as I had them:
This now agrees when I fill in the rest:
Summary and Conclusions
- Jim has a full paternal Hartley Chromosome
- Joel has a full Frazer Chromosome
- I wonder why Jim had not Hartley cousin matches given his full Hartley Chromosome.
- I made it through the problem areas without too much difficulty.
- Most of the problems were of my own making. I found and corrected two of my own mistakes.