Kind of fun - we did the DNA test - Mothering Forums

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#1 of 37 Old 10-02-2006, 09:07 PM - Thread Starter
 
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My twins were di-di, but for months everyone has asked if they are identical. Although I can see all the differences between them, I know they look very much alike, and most of my friends/family cannot tell them apart. Even my husband can be fooled sometimes (as have I been twice at 4am!! ) A friend of ours had a DNA test kit she hadn't used, as she found her triplets were identical via a placental biopsy after they had purchased the test. So, she offered it to us, we did the cheek swabs, and sent them away (fittingly, on the way to the christening of another set of trips!)

Anyway, we got the results today and everyone who mixes them up can stop feeling stupid - they are officially monozygotic (identical)! I think I would've been surprised if they were not, but it is still weird and somehow surprising to learn that they are. I just never imagined having identical twins - it always seemed so exotic to me.

Of course, the people I've told IRL all say "Well, duh - we could've told you that!" LOL! It means nothing really, but it's nice to at least be able to answer the inevitable question with a definitive, rather than "Well, we think so..." and have them look at us like we're idiots for not knowing.

Betsy, mama to beautiful, strong MZ twins Lillian and Kate, born 11 weeks early on January 10, 2006.
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#2 of 37 Old 10-02-2006, 09:11 PM
 
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that's pretty cool!!!
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#3 of 37 Old 10-03-2006, 12:40 AM
 
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That is so cool. Why did you think they were didi before?
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#4 of 37 Old 10-03-2006, 01:29 AM
 
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That is so cool. Why did you think they were didi before?
My twins are di-di, but identical also. It just means that they had their own sacks and placentas, but came from the same fertilized egg. The the zygote splits early, they don't share anything and are di-di.

How cool to get the official word! all twins are way cool, but I do enjoy having ID's. Its just fun to see them interact and know they have the same DNA.
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#5 of 37 Old 10-03-2006, 06:29 AM
 
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So this is going to be a really dumb question but if they look VERY different then there is no chance of being ID, right? My boys are different as can be, and we're pretty sure they were conceived a couple of days apart on a double ovulation month, but as I'm still new to this whole twin thing, I don't want to discount anything.

Thanks!
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#6 of 37 Old 10-03-2006, 08:24 AM
 
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I knew that about didi But the only way to diagnose that is through u/s right?
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#7 of 37 Old 10-03-2006, 08:40 AM - Thread Starter
 
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I knew that about didi But the only way to diagnose that is through u/s right?
Well, if you hadn't had an u/s I suppose they could tell at delivery. But ya, they were able to see the membrane between the sacs via ultrasound.

Is it wrong of me to feel vaguely (OK, more than vaguely) happy that they are identical because my MIL was so convinced they are not from the beginning? Let me be clear that the beginning was at 29 weeks, with Kate on a ventilator and Lilly on a CPAP, and my MIL saying "Well, I don't really think they look alike..." :

Betsy, mama to beautiful, strong MZ twins Lillian and Kate, born 11 weeks early on January 10, 2006.
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#8 of 37 Old 10-03-2006, 08:43 AM - Thread Starter
 
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p.s. Twinvillageiowa - 6/3 is my birthday, too! Around 11pm. It's kinda neat that your girls were born on different dates - that will always be fun for them.

Betsy, mama to beautiful, strong MZ twins Lillian and Kate, born 11 weeks early on January 10, 2006.
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#9 of 37 Old 10-03-2006, 09:41 AM
 
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I thought when twins were born they HAD to test them for identical/fraternal-ness for genetic and/or health reasons. Mine were OBVIOUSLY fraternal (they hardly look like brothers) they told me that they had to test the placentas to see if they were ident/frat. They kinda made it seem like it was law or something.

That is neat to know for sure, congrats.

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#10 of 37 Old 10-03-2006, 09:59 AM - Thread Starter
 
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Hey, neat! I'm in Huntington - not too far away. A loooooong time ago (12 years - yipes) I worked at WBAB in W. Babylon. Too bad you're not still around - I would love to meet more twin mom friends around here. Your boys are so adorable!

My OB said that testing the placentas would be inconclusive unless they did DNA testing on them, which I guess they do not do because it's expensive. I was never able to get a straihgt answer about whether they even did anything because I didn't end up giving birth at my planned hospital (Huntington). Because I went into PTL at 27 weeks, he transferred me to North Shore University Hospital for their high-risk antepartum unit, and I had the babies there 2 weeks later. Once they were in the NICU and everything I sort of forgot about the placental pathology results and no one ever mentioned anything. And then it just got so far out that I didn't feel like asking them. Someday I'll have to get copies of all our records, just for the curiosity of it all anyway.

Betsy, mama to beautiful, strong MZ twins Lillian and Kate, born 11 weeks early on January 10, 2006.
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#11 of 37 Old 10-03-2006, 12:53 PM
 
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My girls were also di/di and had their own placentas so we had to do the DNA test. Because I could tell them apart so easily I knew for sure they'd be dizygotic but then one day I got pictures developed and could not figure out which baby it was in a particular picture. I ordered the test that day. Sure enough my girls are monozygotic! It was so fun finding out and knowing FOR SURE what their zygosity was.

Karen - Mama to Haven (9/00) , Lillie & Faith (MZ - 12/02) and my first homebirthed baby, Willa (3/08)
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#12 of 37 Old 10-03-2006, 02:23 PM
 
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I kinda want to get the test done too, even though it's so obvious that mine are DZ. For one, I conceived using Clomid (so what are the chances I just randomly got MZ twins that had nothing to do with the meds), and two they look absolutley nothing alike. Dh thinks it's ridiculous to pay for testing when they're clearly fraternal, but I don't like to lie and people ask all the time if they're identical or fraternal and we always say "well, we haven't had them tested but we're pretty sure they're fraternal." I feel like I should just say that they're fraternal b/c clearly they are, but w/o the official confirmation I feel kinda weird saying so!

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#13 of 37 Old 10-03-2006, 03:06 PM
 
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That is cool you know they are identical. Kind of like a special gift! Mine are boy/girl and look nothing alike so obviously we don't need to test. But according to strangers on the street boys and girls CAN be identical, don't you know?

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#14 of 37 Old 10-03-2006, 03:32 PM
 
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I'd like to get my girls tested but right now it's just too expensive. I am convinced they are identitical even though i can easily tell them apart. Maybe someday we'll get the test done. It should be exciting we we do finally get it done. And it will be easier to tell people for sure instead of saying "they are identical but we havent officially had the tested." Anyways, congrats on knowing for sure.
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#15 of 37 Old 10-03-2006, 03:55 PM
 
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That's so cool. I am cary di di girls and I really hope they are identical. DH is hard set that if they are fraternal he won't want to try for number 4 b/c the odds of another multiple pregancy are 1:5 (if they are fraternal and concieved without any reproductive therapies) and he says he wouldn't mind 4 children 'but can't handle 5". We don't have any twinning in either family so I am keeping ym fingers crossed that thye are ID. I would really love another pregnancy, anothre homebirth and a 4th child. I grew up in a 4 child household and I would likely play the odds game even if they are fraternal - but that whole topic won't be up for debate for at least 2 years
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#16 of 37 Old 10-03-2006, 10:09 PM
 
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nak
Does anyone know where to get them tested cheaply? Or how much they usually cost?
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#17 of 37 Old 10-03-2006, 10:49 PM
 
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I'm sure you all knew this but don't forget that you should always take the first step of getting their blood typed. If their types are different then they are fraternal for sure but if they are the same then you should take the next step and do DNA. Our test was about $150. A lot to shell out at once but nice to have that "know for sure" feeling.

Karen - Mama to Haven (9/00) , Lillie & Faith (MZ - 12/02) and my first homebirthed baby, Willa (3/08)
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#18 of 37 Old 10-03-2006, 11:16 PM
 
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good point about blood typing!
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#19 of 37 Old 10-04-2006, 12:04 AM - Thread Starter
 
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Yeah, we found out pretty early on (in the NICU) that they were both A+, just like Mommy. Actually, everyone says they look just like Mommy, too. They are fair-skinned and blue-eyed and look a lot like my baby pictures. My husband jokes that I must be a hermaphrodite because he can't see himself in there at all.

Betsy, mama to beautiful, strong MZ twins Lillian and Kate, born 11 weeks early on January 10, 2006.
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#20 of 37 Old 10-04-2006, 12:54 AM
 
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Being able to answer people's question was a big reason we went ahead & did the dna test too LOL. I got especially tired of the people who tried to convince me that I should be able to know if they were mz based on seperate sacs, etc. Yes, you read an article on twins once, obviously you know more about it than my doctors, or me.
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#21 of 37 Old 10-04-2006, 05:08 AM
 
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We're awaiting the placental pathology that will tell us if our boys are identical or not. We were SO sure they were fraternal and then they came out looking just alike except our first has a scab from the internal heart monitor. How long did it take for you to be able to see the difference?
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#22 of 37 Old 10-04-2006, 05:21 AM
 
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We're awaiting the placental pathology that will tell us if our boys are identical or not. We were SO sure they were fraternal and then they came out looking just alike except our first has a scab from the internal heart monitor. How long did it take for you to be able to see the difference?
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#23 of 37 Old 10-04-2006, 08:08 AM
 
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I'm sure you all knew this but don't forget that you should always take the first step of getting their blood typed. If their types are different then they are fraternal for sure but if they are the same then you should take the next step and do DNA. Our test was about $150. A lot to shell out at once but nice to have that "know for sure" feeling.
well that doesnt work for us. both mommy and daddy have teh same blood type and so do all of our kids. and our doctor wasnt at all helpful when we asked about the placenta. there was one placenta but he just said he had no reason to test it. so now our only option would be to have their dna tgested right?
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#24 of 37 Old 10-04-2006, 11:11 AM
 
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Wow. My doctor examined the placenta and said yep they are definately identical. Also the specialists told me as well that they are identical as well, because they shared one membrane and one placenta. Then in the NICU they said they have the same blood type so they are ID. And they really started looking alike at one year old. When they were born there was about a 2 lb difference so they looked nothing alike, so I had my doubts. But they still do have some beauty marks in differernt places and birth marks.
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#25 of 37 Old 10-04-2006, 12:48 PM
 
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Being able to answer people's question was a big reason we went ahead & did the dna test too LOL. I got especially tired of the people who tried to convince me that I should be able to know if they were mz based on seperate sacs, etc. Yes, you read an article on twins once, obviously you know more about it than my doctors, or me.
Don't you just love the all-knowing public?! Before I knew for sure I had quite a few comments made. One woman said I should know because of the sacs, etc. I told her that we now know that it doesn't exactly work that way and she says that she has twins (they were in their teens) and that her doctor told her that so it must be true. Okay...and science doesn't learn new things every day.....? Then there were the people who would try to guess on their own. Or the woman who after I found out and told her they were identical who said "Hmmmm....I don't think so!" Okay. Ohhhh! But the BEST ONE was when a woman asked what they were and I said identical. She looks at them and says.....are you ready for this......???? "But you don't have them dressed alike!" Uhhhh...okay.

Anyone else here think the Olsen twins need to get their DNA tested? They claim they are fraternal but I think they were given wrong info when they were born. No way those girls look THAT MUCH alike and aren't monozygotic!!

Karen - Mama to Haven (9/00) , Lillie & Faith (MZ - 12/02) and my first homebirthed baby, Willa (3/08)
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#26 of 37 Old 10-04-2006, 02:02 PM
 
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well that doesnt work for us. both mommy and daddy have teh same blood type and so do all of our kids. and our doctor wasnt at all helpful when we asked about the placenta. there was one placenta but he just said he had no reason to test it. so now our only option would be to have their dna tgested right?
If there was only one placenta, they are ID. If twins share *anything* they are ID and even if they share nothing they can still be ID. Frat twins are alwas di-di.
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#27 of 37 Old 10-04-2006, 02:09 PM
 
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Anyone else here think the Olsen twins need to get their DNA tested? They claim they are fraternal but I think they were given wrong info when they were born. No way those girls look THAT MUCH alike and aren't monozygotic!!
I agree. They are totally identical. If they weren't identical, they wouldn't have both been able to play the same baby on Full House. I bet they were di/di so they were told they could not be identical. See, now I am being one of those annoying people that thinks they know more than the parents.

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#28 of 37 Old 10-04-2006, 03:10 PM - Thread Starter
 
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Anyone else here think the Olsen twins need to get their DNA tested? They claim they are fraternal but I think they were given wrong info when they were born. No way those girls look THAT MUCH alike and aren't monozygotic!!
Yes! I have been saying this ever since I learned that identical twins could be di-di. If I had cash to throw around, I'd send them a test kit.

Betsy, mama to beautiful, strong MZ twins Lillian and Kate, born 11 weeks early on January 10, 2006.
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#29 of 37 Old 10-04-2006, 03:18 PM
 
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I agree. They are totally identical. If they weren't identical, they wouldn't have both been able to play the same baby on Full House. I bet they were di/di so they were told they could not be identical. See, now I am being one of those annoying people that thinks they know more than the parents.
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#30 of 37 Old 10-04-2006, 04:34 PM
 
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Wow! Must be year of the di-di girls! We are expecting ours in 8 weeks. I was told by the peri's u/s tech that our girls were definately frat because of the separate everything and when I mentioned this to my doc (who has twins herself) said, "Everyone that doesn't have twins knows something about twins, and it is usually wrong." I am finding that this is very true.
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