Gedmatch:. Are your parents related

[Lemminkäinen]

This could sound like a sensitive issue, but I don't think it is. The Finns are often said to be small, isolated and inbred population. I simply don't know. There are many questions, like approval of cousin marriages and effective population size. The latter implies how even today large populations can look like a smaller one as to the genetic structure. My parents are both from the same Finnish region, but in Finland cousin marriages were banned for hundreds years. So I am a bit confused about what my results means. Neither Gedmatch gives answers, only results and I don't know how reliable these results are. I hope people could post results here. We have no real world evidence that children born of cousin marriages are vulnerable to diseases or something bad, although claims of that are usual, especially in America where many see Europe as a more inbred place. Disease carriers are another question and based on rare mutations, which of course are forwarded to children. Here is my result:

One segment.
Largest segment = 10.8 cM
Total of segments > 7 cM = 10.8 cM

[Kaspias]

It is culturally forbidden among Turks to marry relatives. We count relativity up to 7 generations, as a rule, and any relativity connection below 7 generations means you can not marry. In fact, I believe, this is one of the reasons for exaggerated genetic replacement in some regions. A similar case for Pomaks, in which cousin marriages relatively do not occur. However, this thread gave me the idea that I can check the parental relativity of all kits I have and collect them as an applicable data.

For my case: No shared DNA segments found

[Dušan]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

[Vrazijadivizija]

Funnily my parents are indeed sharing a common ancestor in the past few generations.

Largest segment = 25.2 cM
Total of segments > 7 cM = 36 cM
This analysis indicates that your parents may be distantly related.

[Tenma de Pegasus]

It is culturally forbidden among Turks to marry relatives. We count relativity up to 7 generations, as a rule, and any relativity connection below 7 generations means you can not marry. In fact, I believe, this is one of the reasons for exaggerated genetic replacement in some regions. A similar case for Pomaks, in which cousin marriages relatively do not occur. However, this thread gave me the idea that I can check the parental relativity of all kits I have and collect them as an applicable data.

For my case: No shared DNA segments found

Incredible

[Fedora]

It is culturally forbidden among Turks to marry relatives. We count relativity up to 7 generations, as a rule, and any relativity connection below 7 generations means you can not marry. In fact, I believe, this is one of the reasons for exaggerated genetic replacement in some regions. A similar case for Pomaks, in which cousin marriages relatively do not occur. However, this thread gave me the idea that I can check the parental relativity of all kits I have and collect them as an applicable data.

For my case: No shared DNA segments found
Not true for Central Anatolian and Eastern Anatolian Turks.

[Mejgusu]

Not true for Central Anatolian and Eastern Anatolian Turks.

This counts for every part of Turkey, I know people from Black Sea area, Western amd Southern Turkey who married relatives. The grandmother of my brother in law who is a Balkan Turk said to me that they also have marriages between relatives when she told me her family stories, I am not a Balkan Turk so I can’t say anything about that, also besides of the family of my sisters husband I never met Balkan Turks, so I trust to Kaspias too, maybe it changes every region or whatever, idk.

Marriages between relatives were very common everywhere in Turkey, nowadays they marry at most someone from the same village, only very rural people let their children marry with relatives.

[Alexandro]

I wouldn't think so since my dad was a peninsular Spaniard and my mom is Canarian (although genetically they are basically peninsular Spaniard and Portuguese + minor guanche) but my parents both come from small towns where most of my ancestors lived for centuries so I wouldn't doubt there was some inbreeding happening....

[Dr_Maul]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

[Kriptc06]

There's no way my parents are related, they are very different from one-another, one is southern one is northeastener, very different origins, the only thing in common is Portuguese. Neither are my paternal grandparents, one is bessarabian, the other southern brazilian.

My maternal grandparents in the other hand maybe distantly related.


Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

[Jana]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

My both parents are half Dalmatian islanders, and islanders are said to be inbred but luckily I'm not at all.

[Kriptc06]

I wouldn't think so since my dad was a peninsular Spaniard and my mom is Canarian (although genetically they are basically peninsular Spaniard and Portuguese + minor guanche) but my parents both come from small towns where most of my ancestors lived for centuries so I wouldn't doubt there was some inbreeding happening....

it's so likely that I'd say yes it happened. For example do you know your 3rd or 4th cousins? what stop you from hooking up with them without knowing? Anyway, 3rd, 4th cousins are removed enough.

[Alexandro]

it's so likely that I'd say yes it happened. For example do you know your 3rd or 4th cousins? what stop you from hooking up with them without knowing? Anyway, 3rd, 4th cousins are removed enough.

I seriously doubt my parents are related in any way (if so it would have to be reaaaally distant, my mom is mostly colonial Canarian from what I can tell in my genealogical research) but yeah I don't doubt that inbreeding happened, especially on my paternal line, because the town my dad came from has a whole population of....35! xD

[Kriptc06]

I seriously doubt my parents are related in any way (if so it would have to be reaaaally distant, my mom is mostly colonial Canarian from what I can tell in my genealogical research) but yeah I don't doubt that inbreeding happened, especially on my paternal line, because the town my dad came from has a whole population of....35! xD

dear Lord...

In any case every human have cases of inbreeding in the past, cause if we multiply our ancestor by two, by the middle ages we end up with a number higher than the number of people alive, which is impossible.

[Scandal]

Mine:

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM
No shared DNA segments found
This analysis indicates that your parents are probably not related within recent generations.
Makes sense, my parents are from two different parts of the country.

[Lemminkäinen]

dear Lord...

In any case every human have cases of inbreeding in the past, cause if we multiply our ancestor by two, by the middle ages we end up with a number higher than the number of people alive, which is impossible.

Yes. The pedigree collapse is present everywhere. Is it remarkable pointing out inbreeding 300, 500 or 1000 years ago and should we call it inbreeding? Gedmatch's default value is 7 cM, but it would be smaller, f.ex. 5 cM. They probably have a good reason to use 7 cM, because homozygous randomness tends to increase in smaller blocks faster than heterozygotes. One or two random blocks are not a strong evidence, so Gedmatch gives reliable results only for prominent inbreeding.

[calxpal]

0 cM for my parents

[Gallop]

Mine

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

Father 23andME

Largest segment = 13.7 cM
Total of segments > 7 cM = 13.7 cM

This analysis indicates that your parents may be distantly related.

Father FTDNA

Largest segment = 13.7 cM
Total of segments > 7 cM = 13.7 cM

This analysis indicates that your parents may be distantly related.


They are all of the same population, about 8000 inhabitants at present, although they are only a quarter of a century old.

[Chaos One]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

---

Makes sense. Only way to make it happen was if some Italian common ancestor, but since families are from different regions...

[Kaspias]

This counts for every part of Turkey, I know people from Black Sea area, Western amd Southern Turkey who married relatives. The grandmother of my brother in law who is a Balkan Turk said to me that they also have marriages between relatives when she told me her family stories, I am not a Balkan Turk so I can’t say anything about that, also besides of the family of my sisters husband I never met Balkan Turks, so I trust to Kaspias too, maybe it changes every region or whatever, idk.

Marriages between relatives were very common everywhere in Turkey, nowadays they marry at most someone from the same village, only very rural people let their children marry with relatives.

No, marrying a relative is something discrediting here. See that Thrace has no marriage relative at all. This is due to the reason the samples I collected are still living in Bulgaria and Greece. However, in some cases which applies Deliorman and Makedonya Turks, in the condition of early migration to the Anatolia, moreover, if their village is surrounded by Anatolian Turks, a few of them have preferred to marry with cousins down to 4-5h Cousin apparently. Deliorman_42 and Deliorman_55 are from Afyon, for example, and migrated following the Russo-Turkish War in 1887.

Makedonya_17 is an outlier, on the other hand, he has a Yörük surname "Keçeli." However, I didn't talk with him for more details.

https://i.ibb.co/h18r1T5/akrabal-k.png

[Flashball]

No, the northern french side of my mother is located in a specific town.

[Lucas]

This could sound like a sensitive issue, but I don't think it is. The Finns are often said to be small, isolated and inbred population. I simply don't know. There are many questions, like approval of cousin marriages and effective population size. The latter implies how even today large populations can look like a smaller one as to the genetic structure. My parents are both from the same Finnish region, but in Finland cousin marriages were banned for hundreds years. So I am a bit confused about what my results means. Neither Gedmatch gives answers, only results and I don't know how reliable these results are. I hope people could post results here. We have no real world evidence that children born of cousin marriages are vulnerable to diseases or something bad, although claims of that are usual, especially in America where many see Europe as a more inbred place. Disease carriers are another question and based on rare mutations, which of course are forwarded to children. Here is my result:

One segment.
Largest segment = 10.8 cM
Total of segments > 7 cM = 10.8 cM
Can you check random dozen of Finns? If most of them happen to have common segment it would be confirmation of inbreeding theory.

[Lemminkäinen]

Can you check random dozen of Finns? If most of them happen to have common segment it would be confirmation of inbreeding theory.

I could try, but I have other activities today and tomorrow. Selecting random 1000g samples it would be possible. Maybe ten samples. I made a while ago a homozygote run test using Beagle and there was nothing proving about inbreeding. Beagle uses genome adresses in Morgans as also this Gedmatch test. The old fashion homozygote run test counts only SNP runs, giving false results near centromeres. Runs near centromere can be thousands years old.

http://terheninenmaa.blogspot.com/2018/05/homozygosity-by-descent-figures-in.html?m=0

[Benyzero]

My dad is my cousin bru

[Lemminkäinen]

https://youtu.be/5CK1r1MrTOA

[grabielx]

I know my parents are distantly related and they both came from a small town, I dont' have their DNA though, it would have a been fun. :cool:

[MandM]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

[Roy]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

Not surprising for me.

[Roy]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

My both parents are half Dalmatian islanders, and islanders are said to be inbred but luckily I'm not at all.

I do wonder whether people with 100% paper trail ancestry from Krk island would have a different result. I know that Y-haplogroup percentages are peculiar among them so some kind of founder effect definitely is there.

[Mejgusu]

...

Thanks for your information, I cant say anything regarding this about Balkan Turks with certainty.
My point was that people shouldn't push all negative attributes to Central or Eastern Turks, I know enough Turks from everywhere of Turkey with marriages among relatives. My father is a Central Anatolian Turk who didn't married a relative, who is not even from somewhere in the proximity of his village.

[gixajo]

Me:

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

Comparison took 0.27559 seconds.

Report generated on Tue May 25 03:45:49

My father:

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

Comparison took 0.28249 seconds.

Report generated on Tue May 25 03:47:51

My mother(I always thought her parents were at least slighty related because bot lines share some surnames and this is a quite small village...):

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

Comparison took 0.28124 seconds.

Report generated on Tue May 25 03:49:09

[Beowulf]

Luckily no.

[Kess]

No and it was impossible for them to be related.

[Laredo]

Luckily no.

Same here, In countries like Puerto Rico it's common to have related distant ancestry possibly high cousin marriage In the colonial era or something.

[Grace O'Malley]

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

This is for my mother.

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.

[#Oda#]

Luckily no.

It's not as bad as most people think if they are related like 2nd-cousins or 3rd-cousins. I have even an ancestor couple thats 1st-cousins and they had 5 healthy intelligent children.

[nittionia]

No shared DNA segments found

Their families are from different parts of Sweden anyways

[Annie999]

No - DNA proved.

At some point we found out my husband and me share a not-so-comon italian last name. And that branch of our family 3 generations ago, parted from the same port in Italy, I freaked out we were somehow related but DNA confirmed we aren't :D

[rothaer]

It's not as bad as most people think if they are related like 2nd-cousins or 3rd-cousins. I have even an ancestor couple thats 1st-cousins and they had 5 healthy intelligent children.

In the 1930s there was an examination of the population of the Elbe river island of Finkenwerder. From the church records you could see that there was a strong endogamy for centuries. They were surprised to find them not more and not less affected by wrongs than the average population.

I guess that strong endogamy by provoking suffering by severe wrongs individuals that then are excempted from further procreation can make the genepool even healthier then the everage one. If you have a strongly endogamic population with the same health condtions like the common population, this from logics implies that their gene pool will have somewhat less wrongs.

[Feiichy]

here are results for my mother's ex boyfriend who died. He was from small village in remote region where are literaly less than 10 houses, and his both parents are from that village, so no surprise his parents are related. He was PhD in mechanical engineering and pro footballer who teached in Norway. His brother is assistant coach of Norwegian handball national team.

Largest segment = 43 cM
Total of segments > 7 cM = 77.4 cM

Important Notice: The traditional charts used by genetic genealogists to predict the relationship between two people who share DNA are not relevant to, or accurate for, interpreting the results from the AYPR tool. The amount of shared DNA between the parents of a person who receives a positive result is approximately four times higher than the total ROH inherited by the user, the result displayed in cMs here, however an accurate and comprehensive interpretation of the data and prediction of the relationship between the parents of the user is complex, and this calculation alone is not a reliable indicator of the parents' relationship.

Interpreting your result:

This analysis indicates that your parents are probably related.

[Melkiirs]

In my case obviously not. In the case of my father not surprisingly yes.

"Largest segment = 12.8 cM
Total of segments > 7 cM = 12.8 cM

This analysis indicates that your parents may be distantly related."

There is some evidence (Risch et al. 2003) that Litvak Jews went through a unique founder event around when they were allowed back into the Grand Duchy of Lithuania in 1503. So Litvaks would be likely even more closely related than Ashkenazim at large.

[#Oda#]

In the 1930s there was an examination of the population of the Elbe river island of Finkenwerder. From the church records you could see that there was a strong endogamy for centuries. They were surprised to find them not more and not less affected by wrongs than the average population.

I guess that strong endogamy by provoking suffering by severe wrongs individuals that then are excempted from further procreation can make the genepool even healthier then the everage one. If you have a strongly endogamic population with the same health condtions like the common population, this from logics implies that their gene pool will have somewhat less wrongs.

I remember you writing this on fb. However that would be kind of cruel indeed. In any case the negative effects of endogamy are overrated nowadays by lets say about 90% of the people of modern countries.

[Labriego]

My dad is Spaniard (Castilian) and my mom is Jewish (Ashkenazi)... so not related.

[rothaer]

here are results for my mother's ex boyfriend who died. He was from small village in remote region where are literaly less than 10 houses, and his both parents are from that village, so no surprise his parents are related. He was PhD in mechanical engineering and pro footballer who teached in Norway. His brother is assistant coach of Norwegian handball national team.

Largest segment = 43 cM
Total of segments > 7 cM = 77.4 cM

Important Notice: The traditional charts used by genetic genealogists to predict the relationship between two people who share DNA are not relevant to, or accurate for, interpreting the results from the AYPR tool. The amount of shared DNA between the parents of a person who receives a positive result is approximately four times higher than the total ROH inherited by the user, the result displayed in cMs here, however an accurate and comprehensive interpretation of the data and prediction of the relationship between the parents of the user is complex, and this calculation alone is not a reliable indicator of the parents' relationship.

Interpreting your result:

This analysis indicates that your parents are probably related.

Wow, this is correct. How did you know? I once had a longer public dispute with a notable DNA genealogist that stated that is was double and not fourfold as I stated. He ignored my friendly explanations. My conviction is that logic alone matters in such questions, not reputation. So I went on to explain instead of referring to authorities. He then maybe even felt more secure in rejecting my explanations. I let him go on to defend his wrong view. And ultimately I quoted an unquestionable and much accepted authority that had the same "wrong understanding" like me. He was extremely not amused and it took about 5 years till he lately again responded to something that I wrote.

So this is the small anecdote I have in mind regarding the relation of the result of the are-your-parents-related tool and the statistically expected shared cM figure of the parents. :)

77.4 cM means that more than 300 cM can be expected as for the parents' mutual match, which is enormously much. As a rough take, you can say that if you are well into your family and relatives, you can be expeted to know all relatives with more than 100 cM, not necessarly know them in person, but know who it is. I have repeatedly got below 100 cM with well to me known relatives that I even tested.

[Rædwald]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

[#Oda#]

Wow, this is correct. How did you know? I once had a longer public dispute with a notable DNA genealogist that stated that is was double and not fourfold as I stated. He ignored my friendly explanations. My conviction is that logic alone matters in such questions, not reputation. So I went on to explain instead of referring to authorities. He then maybe even felt more secure in rejecting my explanations. I let him go on to defend his wrong view. And ultimately I quoted an unquestionable and much accepted authority that had the same "wrong understanding" like me. He was extremely not amused and it took about 5 years till he lately again responded to something that I wrote.

So this is the small anecdote I have in mind regarding the relation of the result of the are-your-parents-related tool and the statistically expected shared cM figure of the parents. :)

77.4 cM means that more than 300 cM can be expected as for the parents' mutual match, which is enormously much. As a rough take, you can say that if you are well into your family and relatives, you can be expeted to know all relatives with more than 100 cM, not necessarly know them in person, but know who it is. I have repeatedly got below 100 cM with well to me known relatives that I even tested.

Let me guess: His initials are NB?

As to that: My parents get 0 cM in this gedmatch tool, but I know by genealogy that they are at least 3 times related farer back.

[rothaer]

I recall someone having had an unknown great-grandfather and the respective grandfather was alive and was tested. There were years of research and speculations. When the individual I speak of later just for fun put the grandfather's kit in this tool she couldn't believe what she saw. The grandfather got a very high result and it ended up in solving the case. Iirc it was an uncle that had impregnated his niece and could thus not be told. I don't recall whether he even had been married.

[rothaer]

Let me guess: His initials are NB?

Yep. His answer was still very brief and not a letter longer than necessary.


As to that: My parents get 0 cM in this gedmatch tool, but I know by genealogy that they are at least 3 times related farer back.

Yeah, it's really not simple to exceed the threshold of 7 cM at that tool.

The parents of a pre DNA testing deceased grandmother of mine had been 1C1R to each other. But whatever homocygocy my grandmother may have had, it's all tracelessly dissolved in the next generation.

[#Oda#]

Yep. His answer was still very brief and not a letter longer than necessary.

Yeah, it's really not simple to exceed the threshold of 7 cM at that tool.

The parents of a pre DNA testing deceased grandmother of mine had been 1C1R to each other. But whatever homocygocy my grandmother may have had, it's all tracelessly dissolved in the next generation.

NB, well...

Is that your maternal or paternal grandmother?

[rothaer]

NB?


Unfortunately it was again in a thread with a disputed question where he first lectured all commentators with exclamation marks and eventually turned out to be wrong and all others right. But he finally presented his wrong himself as the result of an additional examination by him, lol.

Btw. he's not often wrong.

[rothaer]

NB, well...

Is that your maternal or paternal grandmother?

Maternal.

[#Oda#]

Maternal.

For some reason I thought so.

[djipon]

Largest segment = 15.1 cM
Total of segments > 7 cM = 15.1 cM

This analysis indicates that your parents may be distantly related.

[Beowulf]

It's not as bad as most people think if they are related like 2nd-cousins or 3rd-cousins. I have even an ancestor couple thats 1st-cousins and they had 5 healthy intelligent children.

You're right it shouldn't be that bad if they are just distantly related most of the time.

[Feiichy]

Wow, this is correct. How did you know?

Just copied what is written on gedmatch.


77.4 cM means that more than 300 cM can be expected as for the parents' mutual match, which is enormously much. As a rough take, you can say that if you are well into your family and relatives, you can be expeted to know all relatives with more than 100 cM, not necessarly know them in person, but know who it is. I have repeatedly got below 100 cM with well to me known relatives that I even tested.

So how close related were his parents? Obviously it didn't harm his (or his brother's) abilities, which were exceptional, at all.

found an article after he died....RIP

N.T. died at the age of 64.

Tomac is remembered in Rijeka football as the director of Rijeka, which was denied the championship title due to one referee's flag, in the controversial 1998/99 season.

He played football for Opatija and Orient in the jersey of which he reached his peak as a member of the generation that became famous in the early eighties with two placements in the final of the cup, he was an actor in several anthology matches of the Sušak club. He joined most decorated Norwegian club Roseborg BK only to quit athletic career in favor of academic one.

Tomac was one of the few football players who achieved an enviable academic career, graduated in mechanical engineering, and obtained a doctorate in science in Norway.

After he finished his directorship at HNK Rijeka, he never became more seriously involved in football, he dedicated himself to working with students as University Professor. He lectured at Universities of Trondheim, Narvik and Rijeka.

Nik was normally part of a sports family, his brother Željko played and managed Zamet, and after going to Norway he became an assistant coach of the Norwegian national team. Željko's daughter Marta won the world and European titles in the jersey of the Norwegian national team.

[Feiichy]

Okay, I tested other kits I menage and they don't have parents related except one older lady who is from Island near mine, and that island is quite remote and isolated (much more than my island)

Largest segment = 23.5 cM
Total of segments > 7 cM = 48.7 cM

Interpreting your result:

This analysis indicates that your parents may be distantly related.

She is from here: https://en.wikipedia.org/wiki/%C5%BDirje,_Croatia

Very vital, good looking and sharp minded woman btw.

[rothaer]

Just copied what is written on gedmatch.

That's "new" then compared to 5 years ago.


So how close related were his parents?

It will likely have been something in between 1C1R and 2C, see:

https://i.imgur.com/e3MwM46.jpeg

[ScandinavianCelt]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

This analysis indicates that your parents are probably not related within recent generations.
------------------------------------------------------------------------------------------------------

Just a little blurb on the subject:

The chance that a baby is born with a birth defect or disability is between 2-3%. So, if a hundred people have babies, we would expect that 2 or 3 to be born with some sort of problem. Which of course means that 97 or 98 are fine.

At 3.5%, the risk is slightly higher for second cousins. Still, 96 or 97 out of a hundred babies are born without any major problems.What this all means is that while there is increased risk, it doesn't really qualify as a "high chance." Even first cousins at 5% aren't that big of a risk.

Keep in mind though that these are average numbers. Like people who are not related, your actual risk depends on the genes you and your spouse have.

[Anatolya]

Largest segment = 0 cM
Total of segments > 7 cM = 0 cM

No shared DNA segments found

[Sovanz]

No