Can DNA analysis miss a portion of your ethnic make-up?

[princeton90]

There is a half Romanian half German member. I looked at his results and seems he clusters with Balkans although his ethnic origin is half Romanian half German. However, I can see both German-like and Romanian-like traits on his face. Maybe DNA analysis missed a good portion of his German side, right?

[Art23]

It can. DNA is inherited randomly: random 50% from each parent and so on.

But I have a question, which DNA company has missed it? Let me guess, the overhyped 23&me?

[Jana]

There is a half Romanian half German member. I looked at his results and seems he clusters with Balkans although his ethnic origin is half Romanian half German. However, I can see both German-like and Romanian-like traits on his face. Maybe DNA analysis missed a good portion of his German side, right?

It didn't miss his German part. You just don't know how to interpret his result. But yes, small part of ancestry you have you can randomly not inherit. Not big parts like being half something though.

[Kyp]

1. yes it can (small amounts)
2. phenotype != genotype. Just because he looks more German doesn't mean he is more german than romanian genetically.
3. see Stearsolina's answer

[RatCat]

I dont think so. maybe it can miss a little portion but not that big to make a significant difference. But if you look at some PCA maps you can see the mid-way between Romanians and Germans is close to some Balkanites. That's why he cluster with some Balkanites probably.
https://i.imgur.com/QArvk61.png

[dududud]

1. yes it can (small amounts)
2. phenotype != genotype. Just because he looks more German doesn't mean he is more german than romanian genetically.
3. see Stearsolina's answer

What is wrong: the phenotype generally correlates with the genotype. It's just the morons of Apricity interpreting as "foreign and unrelated to the person's genetics" the person's phenotype, which is actually related to their ancestors and related to his origin.

Anyone from North Africa here looks ... like a North African, because their genetics are, and therefore their faces in general. Certain contributions can also give certain traits or a tendency (levant neolithic, caucaus farmer, iran farmer, subsaharian, etc.).

Some exceptions only confirm the general rule.

As genetics is not in the same field as genealogy, but the two are related in general (remember this: in general).

[Kyp]

What is wrong: the phenotype generally correlates with the genotype. It's just the morons of Apricity interpreting as "foreign and unrelated to the person's genetics" the person's phenotype, which is actually related to their ancestors and related to his origin.

Anyone from North Africa here looks ... like a North African, because their genetics are, and therefore their faces in general. Certain contributions can also give certain traits or a tendency (levant neolithic, caucaus farmer, iran farmer, subsaharian, etc.).

Some exceptions only confirm the general rule.

As genetics is not in the same field as genealogy, but the two are related in general (remember this: in general).

Yes I was responding to the case of a 50% Romanian 50%German guy. Such a mix can result in anything from 100% German or Romanian looking but genetically he'll in any case be 50% German and Romanian. If he looks more German it doesn't mean he's more German genetically than his brother who maybe looks more Romanian.

[Leto]

Aherne is not really "50% German" genetically speaking. He isn't modeled as 50% West German and 50% Romanian.

[Leto]

Yes I was responding to the case of a 50% Romanian 50%German guy. Such a mix can result in anything from 100% German or Romanian looking but genetically he'll in any case be 50% German and Romanian. If he looks more German it doesn't mean he's more German genetically than his brother who maybe looks more Romanian.
These are two half Turkish half German brothers. I don't know where in Turkey their father is from.

Deniz Ayçiçek
https://alchetron.com/cdn/deniz-aycicek-9f21ed8a-26ba-4094-94ff-dd8ff51bbf6-resize-750.jpeg
Levent Ayçiçek
https://alchetron.com/cdn/levent-ayiek-6f932344-201e-474b-9c23-47f4ee3206f-resize-750.jpeg

Levent looks lighter than Frenchman dududud whereas Deniz looks 100% Turkish to me (there are swarthier photos of him).

[Jana]

Aherne is not really "50% German" genetically speaking. He isn't modeled as 50% West German and 50% Romanian.

From my memory he is modeled as close to 50/50 (sth. like that didn't double check as I'm lazy) Macedonian and French, so there you go.

[Jana]

I dont think so. maybe it can miss a little portion but not that big to make a significant difference. But if you look at some PCA maps you can see the mid-way between Romanians and Germans is close to some Balkanites. That's why

He is half southern Romanian and his Romanian side is Macedonian/Balkan Vlach like thus more southern than Romanian average. His German side is French like (I guess from SW Germany/Switzerland/Alsace), thus him plotting somewhere close to more northernly Serbs makes sense.

[princeton90]

He is half southern Romanian and his Romanian side is Macedonian/Balkan Vlach like thus more southern than Romanian average. His German side is French like (I guess from SW Germany/Switzerland/Alsace), thus him plotting somewhere close to more northernly Serbs makes sense.

This explains everything. Both his German and Romanian sides are more southern shifted than expected.