It’s almost certainly true. The tests are extremely accurate at that level of genetic relationship

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Jul 5, 2024
10:32:24am

YIsForBrigham Give me a break!

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YIsForBrigham

Previous username: TrueAndBlue
Bio page: YIsForBrigham
Joined: Aug 9, 2012
Last login: Jul 8, 2024
Total posts: 65,802 (17,855 FO)

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Messages

Author

Time

DNA testing shows I have a half sister I believe is my cousin. Anyone know how

BYU_CPU

Jul 5, 9:37am

Potentially believable. I have a few friends who took DNA tests and …

Dan

Jul 5, 9:39am

Consistently, DNA tests find that 9-10% of the time, daddy isn’t who people

Japan Coug

Jul 5, 10:17pm

Maybe you should ask your parents??

TLCougar

Jul 5, 9:40am

Uh oh. Mom or Dad fooling around with the other spouse’s siblings?

WDaddy

Jul 5, 9:43am

From his perspective, it would be the dad.

Yukon

Jul 5, 10:00am

Or a child before wedlock and adopted elsewhere.

Acorn

Jul 5, 10:20am

It's one reason I get anxious at the thought of having one done.

Cougarclaw

Jul 5, 9:43am

RE: DNA testing shows I have a half sister I believe is my cousin. Anyone know how

jaromp

Jul 5, 9:46am

<< Deleted >>

JimmyZ

Jul 5, 9:47am

If it's accurate, It wouldn't even be close to the first time

fattycoug

Jul 5, 9:49am

<< Deleted >>

JimmyZ

Jul 5, 9:50am

That also could be true

fattycoug

Jul 5, 9:52am

Probably true. Return and report

JuicyJam

Jul 5, 9:54am

My wife just had this happen recently. A person popped up on DNA that appears

TicoBrown

Jul 5, 9:59am

Happens a lot more than you'd expect.

Division Bell

Jul 5, 10:24am

Happens often. Likely accurate.

WallaX2

Jul 5, 10:29am

It’s almost certainly true. The tests are extremely accurate at that level of genetic relationship

YIsForBrigham

Jul 5, 10:32am

my FIL had a child out of wedlock that was adopted. Never told his wife or

qwerew

Jul 5, 10:35am

It told me I had a half-brother. Freaked me out for about a week.

DomCasual

Jul 5, 10:36am

It is estimated that 5-10% of Americans are mistaken on who their biological

Parker Schnabel

Jul 5, 10:41am

We're all one big, happy family

Division Bell

Jul 5, 10:56am

Seems like it’s probably 3-4% generally. It’s a tricky question because methodology is important. Studies that look at

mvtoro

Jul 5, 11:01am

I’ve read that it’s closer to 10% than 5%, globally.

Japan Coug

Jul 5, 10:20pm

It's the off season so it would be great if you kept this a running story. Let us know what your parents say. TIA.

byuTX

Jul 5, 10:43am

My wife's report showed a half brother. It turned out...

BYU-TIFUL

Jul 5, 10:48am

RE: My wife's report showed a half brother. It turned out...

byuTX

Jul 5, 11:21am

I don't want to get into many details, but

BYU-TIFUL

Jul 5, 11:45am

So did her mom act sorry about the affair, or did she try to justify it?

HiLife

Jul 5, 11:50am

Definitely sorry

BYU-TIFUL

Jul 5, 12:00pm

I don’t know why, but that explanation made me personally feel better. I guess this whole topic, and my subsequent ADHD

mvtoro

Jul 5, 12:36pm

Yep. And when people long for the good old days when this stuff didn't happen they must mean pre-human times

byuTX

Jul 5, 1:21pm

Thanks for the info. I'm genuinely curious about these situations. Seems like it worked out remarkably well with the

byuTX

Jul 5, 1:20pm

And this is why they’re illegal in France where half the people think it’s

molodyets

Jul 5, 11:10am

That’s crazy to me. I had to look it up to make sure it’s true. I can understand the “compelling government interest” in

mvtoro

Jul 5, 12:04pm

Well, this seems to imply that non-paternity is relatively low in France:

mvtoro

Jul 5, 12:09pm

None of the DNA companies show “half siblings” that I’ve seen but ancestry.com makes it pretty easy to figure out based

Zach Morris

Jul 5, 11:55am

My wife found a first cousin that we didn’t know existed through DNA testing. He contacted the family when he got the

cheezedawg

Jul 5, 12:51pm

I've had 3 individuals that were like 3rd-4th cousins who show up related, but

EM_Puma

Jul 5, 1:12pm

MIL escaped a terrible marriage when HCBW was a toddler. Bio father was a mess.

TailgateU

Jul 5, 1:36pm

Found out I had two more cousins because of these DNA tests. Also, my wife’s

rainorsnow

Jul 5, 3:37pm

Wow, your fam certainly like to keep things interesting, lol

jaromp

Jul 5, 10:07pm

I met a new cousin about seven years ago through DNA testing, discovered that

LV Mike

Jul 5, 3:45pm

That’s crazy

YIsForBrigham

Jul 5, 10:50pm

You share 25% of your DNA with a half-sister, but only 12.5% with a 1st cousin.

Japan Coug

Jul 5, 10:15pm

you have some friends that did what

Flyingdolphin

Jul 5, 10:20pm

Two brothers from one family married two sisters from another family.

Japan Coug

Jul 5, 10:21pm

My sisters are identical twins. Their kids' tests show two moms. Those kids are

TailgateU

Jul 6, 12:06pm

RE: My sisters are identical twins. Their kids' tests show two moms. Those kids are

cruiserhead

Jul 6, 12:11pm

When a set of identical twins marries another set of identical twins, their kids

Japan Coug

Jul 6, 12:15pm

I’ve seen a couple stories online but I don’t think the genetic siblings thing is accurate. Not all the exact same gene

byuTX

Jul 6, 12:50pm

There’s variation in the specific variable genetic material that any child receives from one parent vs another. So even

mvtoro

Jul 6, 12:58pm

On average I’d suppose cousins like those in this thread would tend to have closer percentage than average cousins but

byuTX

Jul 6, 1:18pm

Why would they have less common DNA than siblings? Think of it this way: if the parents are identical twins, then they

mvtoro

Jul 6, 1:49pm

Yep, it's as if they have the same parents, because they're genetically identical

jaromp

Jul 6, 2:08pm

My sisters' kids show 2 moms on DNA tests. Their kids are genetic half siblings.

TailgateU

Jul 6, 3:20pm

I mean just slightly by percentage. But these cousins definitely wouldn’t have identical DNA as had been suggested in

byuTX

Jul 6, 2:38pm

No. They wouldn’t be identical. I think people here are saying the cousins would be as similar as siblings. I still

mvtoro

Jul 6, 6:56pm

You seem to know your DNA facts better than most. So do you know how much I

BYU_CPU

Jul 6, 5:14pm

I mean, I haven’t studied the accuracy of these tests, but the ordinary variability of common DNA for a half-sibling vs

mvtoro

Jul 6, 6:54pm

Random interesting tidbit: you should have 50% of variable DNA in common with mom, and if your a girl, with dad too. BUT

mvtoro

Jul 6, 1:19pm

Would be interested in your response to the OP.

BYU_CPU

Jul 6, 5:16pm

Here

mvtoro

Jul 6, 7:49pm

Used to work in a blood bank giving RhoGAM shots and doing blood typing

OU Cougar

Jul 6, 8:49am

I have an uncle

hereforlaughs

Jul 6, 10:07am

Here’s my story…

niqmadu

Jul 6, 12:46pm

Ps Im still trying to figure out how to submit the temple work for this

niqmadu

Jul 6, 1:59pm

<< Deleted >>

cugrz84

Jul 6, 7:22pm

Similar thing happened to my grandma.

cugrz84

Jul 6, 7:34pm

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