Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
To clarify, it won't specifically say he is your full or half sibling. It will tell you how much DNA you share, and estimate a relationship based on that. Half siblings share around the same amount as grandparents and grandchildren do, and aunts/uncles and nieces/nephews. So if you're half siblings, it may say something more like grandparent/child or uncle/nephew instead of half siblings, but that would be a good indication of half siblings. If you test with Ancestry, it might also say something like "Close family to 1st cousin" - that would also be an indication you're actually half siblings, not full.
Ah.. Yes.. Good point.. 23andme, at least, takes the age of the matches into account.
When my sister's results came back, they listed her as most likely a niece.. That's due to the ~25% match, plus the fact that we're 20 years apart in age. So.. 23andme made an educated guess, which just happened to be wrong.
Had we been at the same percentage, but 2 years apart in age.. It probably would have correctly guessed she was a half-sister.
OP here, Thanks for the info. I think I'll order the sample kit and get my brother's sample when I visit. Someone asked so...I'm female, so no Y chromosome match. I think I'll go with 23and me.
I'm a little torn as to whether I'll ever reveal the results to my brothers, or anyone else. It will just settle some things in my mind, but possibly create even more uncertainty around my family medical history. If it turns out we are half-siblings then the identity of my bio-dad would be a complete mystery.
Ah.. Yes.. Good point.. 23andme, at least, takes the age of the matches into account.
When my sister's results came back, they listed her as most likely a niece.. That's due to the ~25% match, plus the fact that we're 20 years apart in age. So.. 23andme made an educated guess, which just happened to be wrong.
Had we been at the same percentage, but 2 years apart in age.. It probably would have correctly guessed she was a half-sister.
23andMe does not use your ages to help predict relationship as far as I know. This help article explains how they predict relationships and does not mention age as among them: https://customercare.23andme.com/hc/...d-relationship
If I just did the Ancestry test, and it showed different nationalities, wouldn't that prove we were half and not full siblings? For example if my mom is half Scandinavian and half Irish, and dad is half Native American and half Latino, wouldn't we both show 25% of all four nationalities? Same parents, same percentages right? And if one of us shows some completely different, random nationality that the other doesn't, say Balkan or something, wouldn't that prove we were not full siblings? Or am I missing something here?
was assumed.
DNA Test Report No Chain of Custody
Marker M5_2447S1 M5_2447S2 FSI HSI AMEL D3S1358
X X N/A N/A 16 15,16 1.30 1.55 D1S1656 15.3,18.3 12,15.3 2.40 2.65 D2S441
11,14 12,14 0.77 1.02 D10S1248 14,15 15 1.52 1.77 D13S317 Penta E D16S539
10,11 10,11 11.44 3.54 10,16 7,10 1.71 1.96 11,12 11,13 0.65 0.90 D18S51 14,16 13,18 0.25 0.50 D2S1338 CSF1PO STATISTICS: Penta D Full/Half Sibling Likelihood: 1 Probability: 58.77% Half Sibling/Unrelated Likelihood: 600637 Probability: 99.99%
Can someone please help me with these results. Is my sister and I full or half sister's. I can't read them.
Kind of unfair to get results Friday night and wonder over weekend. Any experts here. Thanks
If I just did the Ancestry test, and it showed different nationalities, wouldn't that prove we were half and not full siblings? For example if my mom is half Scandinavian and half Irish, and dad is half Native American and half Latino, wouldn't we both show 25% of all four nationalities? Same parents, same percentages right? And if one of us shows some completely different, random nationality that the other doesn't, say Balkan or something, wouldn't that prove we were not full siblings? Or am I missing something here?
Yes and no..the nationalities should be close, but do not necessarily have to be..but half siblings share less centimorgans than full siblings, so the amount of shared DNA (centimorgans) is what Ancestry would base the estimate on. ... I have 2 half cousins (sisters). One is my lowest first cousin, the other my highest second cousin. That estimate is based off shared DNA.
If I just did the Ancestry test, and it showed different nationalities, wouldn't that prove we were half and not full siblings? For example if my mom is half Scandinavian and half Irish, and dad is half Native American and half Latino, wouldn't we both show 25% of all four nationalities? Same parents, same percentages right? And if one of us shows some completely different, random nationality that the other doesn't, say Balkan or something, wouldn't that prove we were not full siblings? Or am I missing something here?
No, because you each got different mixes from your parents. If you didn't, you'd all be identical.
I'm not as up on how all this works as some of the others here, but I am one of six living siblings, and five of us have been tested. We are all full siblings and all different in our percentages.
was assumed.
DNA Test Report No Chain of Custody
Marker M5_2447S1 M5_2447S2 FSI HSI AMEL D3S1358
X X N/A N/A 16 15,16 1.30 1.55 D1S1656 15.3,18.3 12,15.3 2.40 2.65 D2S441
11,14 12,14 0.77 1.02 D10S1248 14,15 15 1.52 1.77 D13S317 Penta E D16S539
10,11 10,11 11.44 3.54 10,16 7,10 1.71 1.96 11,12 11,13 0.65 0.90 D18S51 14,16 13,18 0.25 0.50 D2S1338 CSF1PO STATISTICS: Penta D Full/Half Sibling Likelihood: 1 Probability: 58.77% Half Sibling/Unrelated Likelihood: 600637 Probability: 99.99%
Can someone please help me with these results. Is my sister and I full or half sister's. I can't read them.
Kind of unfair to get results Friday night and wonder over weekend. Any experts here. Thanks
This sounds like one of the paternity/close family specific tests rather than a genealogy related test - I don't know much about those. What company was it? It sounds like it's saying there's a 99.99% chance you're unrelated.
If I just did the Ancestry test, and it showed different nationalities, wouldn't that prove we were half and not full siblings? For example if my mom is half Scandinavian and half Irish, and dad is half Native American and half Latino, wouldn't we both show 25% of all four nationalities? Same parents, same percentages right? And if one of us shows some completely different, random nationality that the other doesn't, say Balkan or something, wouldn't that prove we were not full siblings? Or am I missing something here?
You should be looking at the relationship 23 and me told you that your sibling is. It should say sibling/close family and how much DNA you share. Being siblings has nothing to do with how much ethnicity you both were given. I haven't done 23 and me so am not familiar with family relationship terms they use.
If you have high numbers of something totally different then it's safe to say 1/2 siblings.
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
