DNA in 4 overlapping segments (Can someone please explain this)?

[Rosinish]

Hi Folks,

I have access to my brother's DNA results (23andme) & I have found a link which says;

'Where you share identical DNA in 4 overlapping segments' 

On the chart provided (which I don't understand) the 4 highlighted 'segments' are numbered...

2, 6, 9 & 15

I would like to know what this means please?

Annie

[hurworth]

I haven't used 23andMe but perhaps they mean which chromosomes the matching segments are on?

[Rosinish]

Hi Hurworth,

Those overlapping are not on a continuous line (from what I gather) i.e. could that mean a family connection married another family connection?

This wouldn't surprise me as they seem (from my guestimate) with surnames to have emigrated from the same area i.e. a strong possibility of being related historically from a small community?

It's the word 'overlapping' which I don't quite understand & I'm new to all this DNA jargon 

Annie

[hurworth]

Does it have a diagram?

Perhaps you could post a picture, as long as any identifying info, e-mail addresses etc are not showing.

The closer a relative someone is to you the greater the amount of identical DNA they are likely to share with you.  Endogamy/intermarriage can also result in more shared segments than is usual for the degree of relationship.

I'd also recommend uploading to Gedmatch to find more matches who have tested elsewhere.

[youngtug]

http://blog.kittycooper.com/dna-testing/dna-basics/

Scroll down to; can you find new relatives with autosomal DNA testing.

[Rosinish]

Does it have a diagram?

Perhaps you could post a picture, as long as any identifying info, e-mail addresses etc are not showing.

I'd also recommend uploading to Gedmatch to find more matches who have tested elsewhere.

Hurworth,

I'm still learning to navigate but the diagram is like a Ready Reckoner to me.

I can't copy it but here's what/how it reads.

Where you share identical DNA in 2 overlapping segments

1
2
3
4
5
6          (approx 10 spaces along to the right, a same coloured bar)
7
8
9
10
11
12
13
14
15
16
17
18
19
20 Coloured bar
21
22
X

So to me, looking at that, the person has a direct link with me at no. 20 who would be my g g/father?

Next link would be my x 14 g g/father?.......I haven't found a 14 x g g/father on paper 

Above is my paternal line all b South Uist, Inverness-shire as far as I have got back to which is my 4 x g g/father b c 1767 i.e. I'm lost with this 

This is my brother's DNA & I only have access, wouldn't know how to go about uploading it to Gedmatch & my brother knows nothing about genealogy, I'm the only one doing our tree.

Are you able to send me a PM please, which I can pass to my brother with instructions?

Annie

[Rosinish]

Have now found this;

Paternal Line;

R-M529 is a subgroup of R-M269.
Haplogroup R-M269
Age 22,000 years
Region Europe


Maternal Line

H23 is a subgroup of H.
Haplogroup H
Age more than 40,000 years
Region Europe, Near East, Central Asia

None the wiser 

Annie

[hurworth]

1 to 22 are your pairs of chromosomes, and X is his X chromosome (females have a pair of them).

So your brother and this person have matching DNA on a segment of chromosome 6 and chromosome 20.  6 and 20 doesn't have anything to do with how many generations ago it is, and on its own it doesn't tell you where the connection lies.

I'll post a link shortly for Gedmatch.

[hurworth]

I'm not sure this link will work.

https://www.gedmatch.com/u_23api1.php