skip to main content

DNA Testing Question

22 years ago

Can two individuals who have the same mother be tested to see if they have the same father?

Thanks!

Sort by:Oldest

Comments (7)

nadastimer
22 years ago
Yes. They would compare the DNA with the father's DNA and then you would know. But the father has to be willing to do it~you couldn't do it without his DNA to go by or at least leagally they wouldn't do it without his consent. It wouldn't matter if they had the same mother or not. They can tell if a man is the father even if two children have different mothers.
Karla_NE
22 years ago
Yes, but I think you have to have a DNA sample from the father too.
Related Discussions
dog DNA breed tests--good enough for insurance co.?
Q
Comments (15)
Calliope's advice about the legal ramifications of disclosure is very sound. If insurance companies in your area do not have clauses exempting pit bulls and pb mixes from coverage, then it is not an issue right now. However, an increasing number of insurance companies are adding such exemptions to their home owner policies. Also, in answer to your query, most insurance companies and courts will not accept dna breed identification as proof. Forewarned is forearmed. If you disclose that your dog was represented to you as being part pitbull by the adoption group (who probably did so to avoid liability), and your insurance contains such an exemption clause, and your dog bites someone (even a playful nip) and you are sued as a result, you could be in a world of financial hurt. If you do not disclose this, and you are found out, you might be in worse trouble. Calliope was simply providing you with hard legal and economic facts. Your dog doesn't look much like a pit bull to me. If you had called him a lab/boxer mix or a mutt of unknown heritage from the start, and told everyone that you got him from an ad on Craig's list, you would have a far better chance of erasing the alleged ancestry told you second hand by the rescue people. Unfortunately however you have told people, perhaps insurance agents among them, and posted this information here on the internet. It might seem like "nothing" but if you were facing a lawsuit asking for a 10,000 dollar damage payment, insurance companies will leave no stone unturned to discover whether your dog is an exempted breed to avoid paying. Such a lawsuit could result in your dog being declared dangerous and ordered to be put down. This might seem an extreme circumstance but sadly these type of lawsuits are becoming increasingly common. I would qualify Calliope's statement that if you cannot prove or disprove your dog's ancestry, that you might as well not have insurance at all, would only apply to liability incurred by your dog's actions. Homeowner's insurance is still a necessity for all other eventualities, including non-dog-related liability claims such as a visitor slipping and falling on your steps. I'm sure that's what Calliope meant, in any case. This post was edited by spedigrees on Fri, Nov 8, 13 at 18:21
...See More
Ancestry.com DNA test (or others)?
Q
Comments (15)
I’ve had my DNA done through Ancestry and use it mostly for cousin matching. Within each person's ethnicity estimate, you can expand each region to learn more about it. Ancestry has a series of short videos on their DNA test that I found very informative: https://www.ancestry.com/academy/course/ancestry-dna-101 There one video of less than 7 minutes that’s specifically about ethnicity. You might want to check it out. As I recall, it said that the ethnicity estimates go back 500 to 1000 years.
...See More
The DNA Test
Q
Comments (8)
My husband and I have both had the ancestry autosomal test done. It gives its result in terms of "cousins" but using othe information, you can determine if your match to other people are actually nieces, nephews, aunts, uncles, parens, etc. You do get information on family origin. Many people who are into genealogy use ancestry because they are working on family trees and you get lists of matches that you can contact. I have found quite a few relatives on both of our families through doing this. My husband has also done a Y DNA test through familytreedna. This test is for following the male line back - in other words, father, grandfather, etc. Again we were trying to get back another generation from his known GGGGGrandfather. I was hoping he would match a know descendant from someone back in 1640. The known descendant of this 1640 guy agreed to pay and take his own test for us. There was no match whatsoever. However, we did get a close match to a 4th cousin that verified back to the GGGGrandfather. We have since made a trip up to the Savannah area, met the family and walked on land owned by the ancestors back in 1785! Familytreedna also does "cousin testing", its called familyfinder and they do Mtdna which is the mother's line. There is a sight called gedmatch where you can upload your results from these tests and find matches to anyone else that has uploaded from any of these tests. So you can get matches from your ancestry autsomal tests from people who tested with familytreedna. If you only want your family origins, then the autosomal is probably the cheapest and right now, through ancestry, its $89, plus shipping. You spit in a tube and mail it back, takes 6-8 weeks for results.
...See More
I'm Confused and Could Use Explanation - DNA Testing
Q
Comments (22)
For some it is the idea to know where their family originated or to see if they have Devonian or other ancient man history. Some it is curiosity to see if what they have been told about their family history is true. I am part of the latter group except I want to see how much of it is false. Part of my father's family showed up in Kentucky supposedly coming from Virginia. There are no records that I or others have found of that family with any of the spellings of the name found in Virginia. Looking at some of the old pictures I have wondered if the family was light enough to have passed. One of these days I will actually take a test or two to compare. Edited to add that some diseases that you inherit may not effect you but will effect future generations. I look at YT DNA things several times and was surprised how many had a certain type of jewish ancestry show up in their DNA. People with that ancestry can have Tay Sachs as recessive. Important to know to prevent the anguish of seeing your children start dying shortly after birth.
...See More
trekaren
22 years ago
I think she's wondering if - babies from the same mother can be tested and compared, to see if they have the same father, not who the father is. I think??
Carlotta_Bull
Original Author
22 years ago
TREKaren is correct in what I'm asking about. The question is do the children have the same father? Not who IS the father?

What if the father is not available to give a blood sample (deceased & creamated)? All of his siblings are deceased as well. Is a first cousin on the paternal side close enough?

Thanks!
aileen
22 years ago
Your problem with the first cousin is that you really have no way of knowing if the cousin is a legitimate offspring. You think he/she is from the paternal line. If he/she is not, then there would be no match for either child.

Normally, I think that there would be genetic markers present that could be compared. If they were missing from one child and present in the other, you still would not know for sure if this was just because of the randomness of genetic influence or because the children had difference fathers.
nadastimer
22 years ago
I guess probably since the father is not alive, they're may be differnt rules that apply. I just know that to find out who a father is you can't go out and do it on your own without his consent (think I watched too many talkshows or Dateline or something! LOL). It's kind of hard to get DNA from the father then unless they dig him up, but they usually don't rush to do that. Maybe something would even be on record somewhere with his DNA? You never know?

~Leslie~
aileen
22 years ago
nadastimer has a good idea. There may be blood samples in a hospital or doctors office. If he has not been dead long, there may be hair on a hair brush or something similar to thataround the home.

I think the problem would be to find the DNA markers from the father's sample, then look for the same markers on both the children. I may be wrong, but if the markers are missing, it proves only that he might not be the father, it doesn't PROVE that he could NOT possibily be the father. I think that you would have to find markers that could have been only received from another man to prove without a doubt that the child was not his.

Related Stories

KITCHEN DESIGN 9 Questions to Ask When Planning a Kitchen Pantry

By Susan Redman

Avoid blunders and get the storage space and layout you need by asking these questions before you begin

GREEN BUILDING Considering Concrete Floors? 3 Green-Minded Questions to Ask

By Melanie Loftus

Learn what’s in your concrete and about sustainability to make a healthy choice for your home and the earth

SELLING YOUR HOUSE 15 Questions to Ask When Interviewing a Real Estate Agent

By Laura Gaskill

Here’s what you should find out before selecting an agent to sell your home

WORKING WITH PROS 12 Questions Your Interior Designer Should Ask You

By Mike Dietrich

The best decorators aren’t dictators — and they’re not mind readers either. To understand your tastes, they need this essential info

TASTEMAKERS 5 Questions for Heath's Adam Silverman

By Vanessa Brunner

A studio director brings out-of-the-ordinary dinnerware and home accessories to Heath Ceramics' showrooms. See where he goes for inspiration

WORKING WITH PROS 9 Questions to Ask a Home Remodeler Before You Meet

By Ventana Construction LLC

Save time and effort by ruling out deal breakers with your contractor before an in-person session

DOORS 5 Questions to Ask Before Installing a Barn Door

By Apartment 46 for the Home

Find out whether that barn door you love is the right solution for your space

LIGHTING 5 Questions to Ask for the Best Room Lighting

By Karen LeBlanc Design TV Host & Writer/Blogger

Get your overhead, task and accent lighting right for decorative beauty, less eyestrain and a focus exactly where you want

REMODELING GUIDES Considering a Fixer-Upper? 15 Questions to Ask First

By Sarah Phipps Design

Learn about the hidden costs and treasures of older homes to avoid budget surprises and accidentally tossing valuable features

MOVING Hiring a Home Inspector? Ask These 10 Questions

By Christine Tusher

How to make sure the pro who performs your home inspection is properly qualified and insured, so you can protect your big investment

Sponsored

EK Interior Design

5 Reviews

TIMELESS INTERIOR DESIGN FOR ENDLESS MEMORIES