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Jana
05-20-2021, 04:34 PM
Why does gedmatch tells me my 23andme raw data has more snps than myheritage, but when I try to merge them it says myheritage raw data has more snps than 23andme?

Confused.
vbnetkhio
05-20-2021, 04:39 PM
Why does gedmatch tells me my 23andme raw data has more snps than myheritage, but when I try to merge them it says myheritage raw data has more snps than 23andme?

Confused.

which 23andme version?
Jana
05-20-2021, 05:02 PM
which 23andme version?


V4
Ayetooey
05-20-2021, 05:07 PM
I believe this is because newer datas like 23andmeV5, myheritagev2, have less usable SNPs for admix calculators, but more overall SNPs due to the inclusion of them for health testing. If your myheritage data is v2 then that would be why.
vbnetkhio
05-20-2021, 05:08 PM
V4



https://isogg.org/wiki/Autosomal_SNP_comparison_chart
23andme v4 shuld have 585,327 snps in total, and myheritagev2 should have 576,690.

but 23andme v4 should have more SNPs used by eurogenes k13.
Ayetooey
05-20-2021, 05:08 PM
For instance V5 23andme has more overall SNPs than V4, despite V4 having something like 3x as many snps in gedmatch calcs.

https://cdn.discordapp.com/attachments/611586491982020628/844984775865663518/unknown.png
Jana
05-20-2021, 05:21 PM
it tried merge my raw data some time ago (and faiuled), and it show 23nad me has less snps but on gedmatch it's the opppsite.

am trying to download it again so will post here exact numbers.

btw, merged raw data is superior? should I try it again?
Ayetooey
05-20-2021, 05:23 PM
it tried merge my raw data some time ago (and faiuled), and it show 23nad me has less snps but on gedmatch it's the opppsite.

am trying to download it again so will post here exact numbers.

btw, merged raw data is superior? should I try it again?

It's because the amount of SNP's in the raw data are different to the amount of autosomal SNP's usable by gedmatch calcs. Raw datas contain SNPs used for both autosomal and health tests and when you merge two raw datas through dnakitstudio they show that. You can see in this chart than V5 23andme for instance despite having the lowest amount of snps in gedmatch has high SNP count overall. This chart doesn't have myheritagev2 on it but i'm sure it fits the pattern.

https://www.xcode.life/23andme/23andme-v5-chip-dna-raw-data-analysis/
Jana
05-20-2021, 05:58 PM
It's because the amount of SNP's in the raw data are different to the amount of autosomal SNP's usable by gedmatch calcs. Raw datas contain SNPs used for both autosomal and health tests and when you merge two raw datas through dnakitstudio they show that. You can see in this chart than V5 23andme for instance despite having the lowest amount of snps in gedmatch has high SNP count overall. This chart doesn't have myheritagev2 on it but i'm sure it fits the pattern.

https://www.xcode.life/23andme/23andme-v5-chip-dna-raw-data-analysis/

> First file type: 23andme
> Second file type: FTDNA 1.0 (it's myheritage though, no idea why it says ftdna)
> First file contains 601,802 SNPs
> Second file contains 609,346 SNPs
Jana
05-20-2021, 06:01 PM
OK, I menaged t get merged data file. didn't test it yet, but should I be using it for Vahaduo?
Ayetooey
05-20-2021, 06:04 PM
> First file type: 23andme
> Second file type: FTDNA 1.0 (it's myheritage though, no idea why it says ftdna)
> First file contains 601,802 SNPs
> Second file contains 609,346 SNPs

My v5 23andme for comparison has 638,554 snp according to dnakitstudio, but something measly like 50k in gedmatch calcs.