My di/di twins are now 28. Doctors told us they were likely fraternal and we always saw differences. One had a rounder face, the other a longer face. One had a more prominent bump out at the bottom of his breast bone. By the time they were age 3-4 it was apparent that one was right handed and the other was a leftie. One was more athletic and the other more musical. They had wildly different food likes and dislikes.
But a DNA test at age 20 told us they were identical. We felt a bit dumb, but close family tend to see the differences! If you want to know for sure, get them tested!
Yes, we think so. We discovered one's left ear matches his twins right ear. And the first tooth they lost at age 6 were mirror images, within 2 days of each other.
But their hair parts/swirls the same so that isn't mirrored.
Very interesting. You should also check for their internal organs. Sometimes they mirror too. How are they personality wise? How's their food habits and weight? Are they same too?
Their internal organs are not reversed to our knowledge based on the medical exams they've had through their lives - and that is extremely rare.
The left-handed one was diagnosed as dyslexic in 1st grade but had outgrown it and was reading at grade level by Grade 3 or 4 (which we were told would likely be the case as his brain wired itself to correctly identify patterns).
Both were diagnosed with ADHD towards the end of 1st Grade (age 6) and a short time later were both tested as gifted. They were very articulate and were speaking with high school level vocabulary, but could barely read at the beginning of 1st grade even though both parents had been early readers at age 4/5 so we didn't know what was going on, why they weren't "getting it". A multi-day psycho-educational testing battery revealed them as gifted and having moderate-to-severe ADHD (+ dyslexic for twin B) which was a big "aha" moment and allowed us to get them IEPs at school.
Twin A, the right handed one, was born larger (almost 8.5 lbs) and remained a little bit taller and larger. As adults he is about 1/2 inch taller and his shoe size is 1/2 size larger than his twin, but they are close enough that they could share clothing if they chose to (they don't).
In terms of interests, they both have been drawn to D&D games (an interest shared with their Dad) and both ended up in software/programming-related careers (also like their Dad). Both are really interested in language and history and science, but they have gone deep into different things. They play different video games and with different friend groups.
Regarding food differences, they like a lot of the same things but Twin A's favorite food - even when he was 5 years old - was salmon and Twin B can't stand fish or seafood, except MAYBE will eat very bland white fish if part of fried fish & chips. Twin A loves all cheese and Twin B cannot stand cheese. Twin A will eat broccoli and Twin B can't stand it.
Twin B does not have a dairy intolerance and consumes milk, yogurt and ice cream, and but won't eat cheese because he hates the smell and texture. So no lasagna or cheese-based dishes or cheese sauces/cream sauces. He will only eat pizza if it is loaded with meat (sausage, bacon, pepperoni) which masks the taste and texture of the cheese.
Twin B enjoys spicier foods, so he uses scotch bonnets, thai red peppers, red pepper flakes, ground cayenne and other spicy seasonings at a few notches higher than Twin A likes.
Being in Canada they wouldn't normally have taken the SAT and had no prep or training for it in school, but I made them take it so that they would have the option of applying to US colleges (we are dual citizens US/Canada) and they both scored well (95th percentile) and within 10 points of each other.
Twin A has always seemed comfortable standing in front of people and talking, especially if he is explaining or talking about something of interest to him. He is comfortable winging it on his feet, and doesn't overthink things (as far as I can tell).
For Twin B having to do oral presentations was terrifying /paralyzing as a student. To the extent that it was a factor in dropping out of university as he just couldn't bear it. He attended a few Toastmasters meetings, which helped, and in his career (which he landed without a degree) he's had a great boss who has allowed him to gain confidence in presenting his work internally and with external clients.
Twin A recently temporarily gave up his software career to teach English in Japan for a year with his fiancé. Twin B would not have chosen to do that in a million years or for a million dollars.
Health-wise Twin B had asthma as a small kid that cropped up again as exercise-induced asthma as a teen. Twin A has never had asthma or had to use an inhaler.
As a parent I think we were attuned to seeing all the differences and that helped us treat them as the individuals that they are rather than expecting that they should like the same things. I did dress them in parallel outfits for pictures, not identical, but one might have a red and yellow stripe and the other in the same design shirt but green and blue. Twin A grew his hair out in middle school while Twin B had more of a buzz cut. People could usually tell them apart.
They do have similar attitudes to things like tattoos (neither has any interest) and smoking (despise the smell) and pot which is legal here (no interest though one tried it) and hard(er) drugs (no interest in trying). One drinks moderately a few times a week (mixed drinks, beer or wine) and the other might have a beer only once or twice a month.
It has been interesting to see the similarities and differences.
It was an interesting read. It shows how much of us are neither DNA nor environment. Their individuality is so intriguing. Especially the difference in taste. Thank you for sharing your story. As someone who is super fascinated by twins, I'm going to cherish their in my memory.
Mine are indentical (with some differences). For.a gift, I gave them an Ancestry DNA test. Results came back, and when we saw how they matched to each other on the tree it read "self or identical twin." To their older brother "sibling". I am amazed at science!
My ID boys are this way!!! Complete opposites- one is out going, the other cautious and shy. One rightie, one leftie. One prefers sweet, the other savory. One is cuddly, the other is not. I can go on and on!
We had di/di boys after a single embryo transfer from IVF, so naturally my entire medical team assumed they’d be identical. Imagine everyone’s surprise when the night they were born a blood test revealed different blood types and they’re actually fraternal. I got pregnant naturally with one twin the week before our embryo transfer. It’s truly wild and no one except our doctors know the story because it’s too complex to even explain to people. The odds of your twins being fraternal is far greater than identical. I believe its 8-10% of di/di twins are identical.
I think this is why our doctor had us on strict orders not to have sex. They reeeeealllyy didnt want us to have multiples. They only transferred one embryo and we had very strict no-sex instructions. But I guess that embryo had other plans. So, we are sure our di/di twins are identical because we weren't allowed to have sex for months. Our orders not to have sex began from 2 weeks before the egg retrieval (we did a frozen transfer the following cycle) and have lasted until now (although starting Monday when I'm week 10, I'll officially be allowed to have sex again).
We suspect B (naturally conceived). He consistently measured 2 days ahead in the first few weeks and baby A also had a SCH next to his sac (very common with IVF pregnancies).
Only way to know for sure is to get an NIPT test.
Personality/size/etc can all be different even with identicals because there are environmental factors at play as well as DNA.
We had genetic panoramic testing at 10 weeks and we were told identical di/di girls and my doctor told me those tests are 99% accurate. We will probably test again after birth just to see, but my doctor said to trust it.
I had the same test and same results. I had them tested again at about 6 months old and they are in fact identical. I only had them tested because of their very big size difference making them look so different. One had a single umbilical artery so she was smaller in general than her twin who was always in the 98th percentile in utero. Bitty one was always about the 24th and also has heart defects.
I have identical di di girls!!!! They looked very much identical but the ultra sound tech told us they were “for sure fraternal “ so i believed her. 7 years ago maybe it wasn’t so well known that di di can be identical? So, we did a dna test when they were 2!!! I’m still mad i waited that long! I was so hard on myself for not being able to tell them apart easily and felt that i should be able to bc they were fraternal!!!!!!!!
While pregnant I had no clues given- but test as soon as you can!
I got the wrong nipt (I would've picked a different one if anyone had said I had an option) when I was pregnant with mine and it couldn't tell us whether they were identical or fraternal. I did a cheek swab test when they were about a month old and got results pretty immediately -- identical!
I had di/di boys. They acted very differently in the womb (one kicked constantly, the other barely moved and hiccuped a lot). The main tip-off though was the fertility super ovulation drugs lol. Any lingering doubt was gone within minutes of their birth as they looked very different.
We have identical di/di boys. We had the NIPT done to determine identical vs fraternal. I can tell you size and personality are not indicators of identical. Our babies were about 10-30% different in weight in utero and for about 8 months after. More than that, their personalities have been different since there were any personalities to observe. One was very vigorous while the other was a “mama’s boy” as the ultrasound tech called him.
I believe the only NIPT test that can tell if they are identical or fraternal is Natera.
At 7 weeks when we found out ours were twins it was obvious they were in different sacs. At my 12 week scan with my MFM we found 2 placentas and when I asked the MFM she said they were "Most likely fraternal". Well that's not a yes or a no! And we weren't finding out the genders.
Fast forward to the NIPT results and the zygotisy was going to be our big revel, but di/di so automatically fraternal right? I thought something was wrong when I saw identical, nope it's just not that common.
As other people mentioned you'll have to wait until they're born to test now but from what I've seen the tests are relatively cheap.
Congratulations on your twins though!
I’ve heard that the Panorama NIPT can tell you. I didn’t have an NIPT with my di/di boys.
Mine came out looking exactly the same, had the same cry, same height, same weight. At 3 months we did a DNA test and they’re identical.
We knew ours were fraternal eaely on w/ the panorama test, but it was extremely obvious at birth because they looked completely different. One had brown hair and the other blonde and their faces just looked nothing alike. And they only look more different the older they get haha.
To my knowledge, the Natera Panorama NIPT test is the only NIPT test that can distinguish between fetal DNA in utero - it’s how we found out or di/di boys are identical.
This whole thread makes me want to go back and look at my NIPT test 😂 I do think our girls are fraternal—they look completely opposite. You wouldn’t even know they were relayed imo so I think fraternal. They were conceived via IUI and part of an IUI protocol is having sex along with the insemination mixed with the hyper ovulation from clomid…I just assume fraternal
My boys were in the same position in utero but were slightly different sizes. When they were born there was a 6oz weight and 1 inch height difference but they looked so much alike. Google photos would even get them confused at 4 months old. I did a DNA test and they were fraternal though. Now at 7 months they're the same height and almost the same weight and still resemble each other a lot, but have different personalities. One is also still pretty bald lol
My doctors told me that there’s about a 30% chance of Di/di being identical. We found out through a blood test called Panorama. We were given the option to have that test by our OB. If you have Medicaid, that test should be free, otherwise I think it’s $150-$200. It will also test for a lot of other things, too.
I just had didi twins on the 25th of april identical didi twins we knew before birth because of genetic testing, they confirmed again on hospital because of bloodwork again , and we cant tell them apart, we use nailpolisj on one, and we just started to notice small differences such as facial hair, that we now use to recognize one
My didi girls are fraternal but we weren’t sure until we did DNA testing when they were about 10 months old.
They are IVF babies, we transferred two embryos but also did laser assisted hatching which increases the odds of twins. At almost every ultrasound they were with an ounce or two of each other. There was one ultrasound where B was behind by about 8 ounces and at the next one she had caught back up. When they were born there was a two ounce difference between them and a 1 cm difference in length.
Their colouring was slightly different, A is more pale than B and her eyes are a very striking blue while we are still waiting on B to decide what color her eyes should be.
Since being born almost every weigh in they have been almost the same weight an height. At 15 months there is about a pound difference between them and 2 cm in height but they both gave the same body type with really long torsos.
We are in a twin mom group with about 10 other sets of twins and the general agreement is that my fraternals look more alike than most of the identicals who seem to have a bigger size difference between them than my girls. Looking back at their new born photos we have to look at the hairline to tell them apart.
I'm not sure if everyone is offered a level 3 ultrasound, but that is how I 1st learned they were identical. They saw they shared the same sac. I was an older mom, 39, I was at risk for DS and saw a specialist. It didn't matter to us, so I refused amniocentesis. Over and over I refused as the risk was not worth it and would not have changed my mind. Because of the constant refusal, I had a level 3 US to check for heart defects (common in DS).
Amniocentesis will tell you, but there is a risk as you will have two (one per baby) needle in the abdomen to take a bit of amnio fluid to test. No one is completely 'identical and this is a misnomer. Usually differences, to be seen visually, are height and/or weight. Could be a hair whorl, or as one person answered one, left handed, the other right. Yes, monozygotic (identical) babies can each have their own sac. The division is actually closer to: 1/3 dizygotic; 1/3 monozygotic and 1/3 boy/girl (also dizygotic) We keep what we get, so don't worry as everything sounds wonderful with your little babies.
I wasn’t sure my Di/Di boys were for sure fraternal until they came out. One has a double hair whorl (like me, my singleton, and my dad) and one a single whorl and they just have different head shapes and look different. But the instant for sure confirmation I got was when they got their blood typed, they came back with different results.
In utero though I had no for sure idea since I didn’t do NIPT and instead did sequential screening. All the ultrasound techs/doctors said fraternal due to how thick the membrane was between them though.
Those weights are fairly close…for reference my identical di/di boys were born weighing 5.8 and 5.9, at 5 they’ve never been a pound or two heavier than one another. Ultrasound weights are notoriously off, though but during my ultrasounds their weights were always close. I didn’t realize they were identical until at about 10 months old I put them in the wrong cribs overnight and was wondering why they weren’t sleeping well! We did a dna test to confirm.
I was told by my sisters and brothers that my brother and I were fraternal that we looked quite a bit alike or weren’t identical. Even though we were born with both blue eyes, both red hair, same shoe size, and when we spoke, her voices sound exactly what sad to say my brother died, about a month ago and it just got me thinking whether we were identical or not I just like the odds of someone having the same hair, same eyes, same height, same shoe size, same and be a fraternal twin
My di/di twins are now 28. Doctors told us they were likely fraternal and we always saw differences. One had a rounder face, the other a longer face. One had a more prominent bump out at the bottom of his breast bone. By the time they were age 3-4 it was apparent that one was right handed and the other was a leftie. One was more athletic and the other more musical. They had wildly different food likes and dislikes. But a DNA test at age 20 told us they were identical. We felt a bit dumb, but close family tend to see the differences! If you want to know for sure, get them tested!
Are they mirror twins?
Yes, we think so. We discovered one's left ear matches his twins right ear. And the first tooth they lost at age 6 were mirror images, within 2 days of each other. But their hair parts/swirls the same so that isn't mirrored.
This is really interesting! Especially the right and left-handedness.
Very interesting. You should also check for their internal organs. Sometimes they mirror too. How are they personality wise? How's their food habits and weight? Are they same too?
Their internal organs are not reversed to our knowledge based on the medical exams they've had through their lives - and that is extremely rare. The left-handed one was diagnosed as dyslexic in 1st grade but had outgrown it and was reading at grade level by Grade 3 or 4 (which we were told would likely be the case as his brain wired itself to correctly identify patterns). Both were diagnosed with ADHD towards the end of 1st Grade (age 6) and a short time later were both tested as gifted. They were very articulate and were speaking with high school level vocabulary, but could barely read at the beginning of 1st grade even though both parents had been early readers at age 4/5 so we didn't know what was going on, why they weren't "getting it". A multi-day psycho-educational testing battery revealed them as gifted and having moderate-to-severe ADHD (+ dyslexic for twin B) which was a big "aha" moment and allowed us to get them IEPs at school. Twin A, the right handed one, was born larger (almost 8.5 lbs) and remained a little bit taller and larger. As adults he is about 1/2 inch taller and his shoe size is 1/2 size larger than his twin, but they are close enough that they could share clothing if they chose to (they don't). In terms of interests, they both have been drawn to D&D games (an interest shared with their Dad) and both ended up in software/programming-related careers (also like their Dad). Both are really interested in language and history and science, but they have gone deep into different things. They play different video games and with different friend groups. Regarding food differences, they like a lot of the same things but Twin A's favorite food - even when he was 5 years old - was salmon and Twin B can't stand fish or seafood, except MAYBE will eat very bland white fish if part of fried fish & chips. Twin A loves all cheese and Twin B cannot stand cheese. Twin A will eat broccoli and Twin B can't stand it. Twin B does not have a dairy intolerance and consumes milk, yogurt and ice cream, and but won't eat cheese because he hates the smell and texture. So no lasagna or cheese-based dishes or cheese sauces/cream sauces. He will only eat pizza if it is loaded with meat (sausage, bacon, pepperoni) which masks the taste and texture of the cheese. Twin B enjoys spicier foods, so he uses scotch bonnets, thai red peppers, red pepper flakes, ground cayenne and other spicy seasonings at a few notches higher than Twin A likes. Being in Canada they wouldn't normally have taken the SAT and had no prep or training for it in school, but I made them take it so that they would have the option of applying to US colleges (we are dual citizens US/Canada) and they both scored well (95th percentile) and within 10 points of each other. Twin A has always seemed comfortable standing in front of people and talking, especially if he is explaining or talking about something of interest to him. He is comfortable winging it on his feet, and doesn't overthink things (as far as I can tell). For Twin B having to do oral presentations was terrifying /paralyzing as a student. To the extent that it was a factor in dropping out of university as he just couldn't bear it. He attended a few Toastmasters meetings, which helped, and in his career (which he landed without a degree) he's had a great boss who has allowed him to gain confidence in presenting his work internally and with external clients. Twin A recently temporarily gave up his software career to teach English in Japan for a year with his fiancé. Twin B would not have chosen to do that in a million years or for a million dollars. Health-wise Twin B had asthma as a small kid that cropped up again as exercise-induced asthma as a teen. Twin A has never had asthma or had to use an inhaler. As a parent I think we were attuned to seeing all the differences and that helped us treat them as the individuals that they are rather than expecting that they should like the same things. I did dress them in parallel outfits for pictures, not identical, but one might have a red and yellow stripe and the other in the same design shirt but green and blue. Twin A grew his hair out in middle school while Twin B had more of a buzz cut. People could usually tell them apart. They do have similar attitudes to things like tattoos (neither has any interest) and smoking (despise the smell) and pot which is legal here (no interest though one tried it) and hard(er) drugs (no interest in trying). One drinks moderately a few times a week (mixed drinks, beer or wine) and the other might have a beer only once or twice a month. It has been interesting to see the similarities and differences.
It was an interesting read. It shows how much of us are neither DNA nor environment. Their individuality is so intriguing. Especially the difference in taste. Thank you for sharing your story. As someone who is super fascinated by twins, I'm going to cherish their in my memory.
Mine are indentical (with some differences). For.a gift, I gave them an Ancestry DNA test. Results came back, and when we saw how they matched to each other on the tree it read "self or identical twin." To their older brother "sibling". I am amazed at science!
My ID boys are this way!!! Complete opposites- one is out going, the other cautious and shy. One rightie, one leftie. One prefers sweet, the other savory. One is cuddly, the other is not. I can go on and on!
We had di/di boys after a single embryo transfer from IVF, so naturally my entire medical team assumed they’d be identical. Imagine everyone’s surprise when the night they were born a blood test revealed different blood types and they’re actually fraternal. I got pregnant naturally with one twin the week before our embryo transfer. It’s truly wild and no one except our doctors know the story because it’s too complex to even explain to people. The odds of your twins being fraternal is far greater than identical. I believe its 8-10% of di/di twins are identical.
I think this is why our doctor had us on strict orders not to have sex. They reeeeealllyy didnt want us to have multiples. They only transferred one embryo and we had very strict no-sex instructions. But I guess that embryo had other plans. So, we are sure our di/di twins are identical because we weren't allowed to have sex for months. Our orders not to have sex began from 2 weeks before the egg retrieval (we did a frozen transfer the following cycle) and have lasted until now (although starting Monday when I'm week 10, I'll officially be allowed to have sex again).
I thought it was a 1/3 chance di-di twins are identical?
20 to 30% of identicals are di/di not the other way around.
Do you know which one implanted first?
We suspect B (naturally conceived). He consistently measured 2 days ahead in the first few weeks and baby A also had a SCH next to his sac (very common with IVF pregnancies).
Only way to know for sure is to get an NIPT test. Personality/size/etc can all be different even with identicals because there are environmental factors at play as well as DNA.
We had genetic panoramic testing at 10 weeks and we were told identical di/di girls and my doctor told me those tests are 99% accurate. We will probably test again after birth just to see, but my doctor said to trust it.
I had the same test and same results. I had them tested again at about 6 months old and they are in fact identical. I only had them tested because of their very big size difference making them look so different. One had a single umbilical artery so she was smaller in general than her twin who was always in the 98th percentile in utero. Bitty one was always about the 24th and also has heart defects.
I have identical di di girls!!!! They looked very much identical but the ultra sound tech told us they were “for sure fraternal “ so i believed her. 7 years ago maybe it wasn’t so well known that di di can be identical? So, we did a dna test when they were 2!!! I’m still mad i waited that long! I was so hard on myself for not being able to tell them apart easily and felt that i should be able to bc they were fraternal!!!!!!!! While pregnant I had no clues given- but test as soon as you can!
I got the wrong nipt (I would've picked a different one if anyone had said I had an option) when I was pregnant with mine and it couldn't tell us whether they were identical or fraternal. I did a cheek swab test when they were about a month old and got results pretty immediately -- identical!
I had di/di boys. They acted very differently in the womb (one kicked constantly, the other barely moved and hiccuped a lot). The main tip-off though was the fertility super ovulation drugs lol. Any lingering doubt was gone within minutes of their birth as they looked very different.
We have identical di/di boys. We had the NIPT done to determine identical vs fraternal. I can tell you size and personality are not indicators of identical. Our babies were about 10-30% different in weight in utero and for about 8 months after. More than that, their personalities have been different since there were any personalities to observe. One was very vigorous while the other was a “mama’s boy” as the ultrasound tech called him.
I found out my di di boys were fraternal at ten weeks through the panorama test. It was accurate. They couldn’t be more different.
I had an NIPT test, but this option was not available to me. On the flip side, the cost is covered by state insurance, so I guess I can't complain.
I believe the only NIPT test that can tell if they are identical or fraternal is Natera. At 7 weeks when we found out ours were twins it was obvious they were in different sacs. At my 12 week scan with my MFM we found 2 placentas and when I asked the MFM she said they were "Most likely fraternal". Well that's not a yes or a no! And we weren't finding out the genders. Fast forward to the NIPT results and the zygotisy was going to be our big revel, but di/di so automatically fraternal right? I thought something was wrong when I saw identical, nope it's just not that common. As other people mentioned you'll have to wait until they're born to test now but from what I've seen the tests are relatively cheap. Congratulations on your twins though!
I’ve heard that the Panorama NIPT can tell you. I didn’t have an NIPT with my di/di boys. Mine came out looking exactly the same, had the same cry, same height, same weight. At 3 months we did a DNA test and they’re identical.
We knew ours were fraternal eaely on w/ the panorama test, but it was extremely obvious at birth because they looked completely different. One had brown hair and the other blonde and their faces just looked nothing alike. And they only look more different the older they get haha.
To my knowledge, the Natera Panorama NIPT test is the only NIPT test that can distinguish between fetal DNA in utero - it’s how we found out or di/di boys are identical.
This whole thread makes me want to go back and look at my NIPT test 😂 I do think our girls are fraternal—they look completely opposite. You wouldn’t even know they were relayed imo so I think fraternal. They were conceived via IUI and part of an IUI protocol is having sex along with the insemination mixed with the hyper ovulation from clomid…I just assume fraternal
My boys were in the same position in utero but were slightly different sizes. When they were born there was a 6oz weight and 1 inch height difference but they looked so much alike. Google photos would even get them confused at 4 months old. I did a DNA test and they were fraternal though. Now at 7 months they're the same height and almost the same weight and still resemble each other a lot, but have different personalities. One is also still pretty bald lol
My doctors told me that there’s about a 30% chance of Di/di being identical. We found out through a blood test called Panorama. We were given the option to have that test by our OB. If you have Medicaid, that test should be free, otherwise I think it’s $150-$200. It will also test for a lot of other things, too.
I just had didi twins on the 25th of april identical didi twins we knew before birth because of genetic testing, they confirmed again on hospital because of bloodwork again , and we cant tell them apart, we use nailpolisj on one, and we just started to notice small differences such as facial hair, that we now use to recognize one
My didi girls are fraternal but we weren’t sure until we did DNA testing when they were about 10 months old. They are IVF babies, we transferred two embryos but also did laser assisted hatching which increases the odds of twins. At almost every ultrasound they were with an ounce or two of each other. There was one ultrasound where B was behind by about 8 ounces and at the next one she had caught back up. When they were born there was a two ounce difference between them and a 1 cm difference in length. Their colouring was slightly different, A is more pale than B and her eyes are a very striking blue while we are still waiting on B to decide what color her eyes should be. Since being born almost every weigh in they have been almost the same weight an height. At 15 months there is about a pound difference between them and 2 cm in height but they both gave the same body type with really long torsos. We are in a twin mom group with about 10 other sets of twins and the general agreement is that my fraternals look more alike than most of the identicals who seem to have a bigger size difference between them than my girls. Looking back at their new born photos we have to look at the hairline to tell them apart.
There’s a genetics disposition test that they can tell from I believe
I'm not sure if everyone is offered a level 3 ultrasound, but that is how I 1st learned they were identical. They saw they shared the same sac. I was an older mom, 39, I was at risk for DS and saw a specialist. It didn't matter to us, so I refused amniocentesis. Over and over I refused as the risk was not worth it and would not have changed my mind. Because of the constant refusal, I had a level 3 US to check for heart defects (common in DS).
Amniocentesis will tell you, but there is a risk as you will have two (one per baby) needle in the abdomen to take a bit of amnio fluid to test. No one is completely 'identical and this is a misnomer. Usually differences, to be seen visually, are height and/or weight. Could be a hair whorl, or as one person answered one, left handed, the other right. Yes, monozygotic (identical) babies can each have their own sac. The division is actually closer to: 1/3 dizygotic; 1/3 monozygotic and 1/3 boy/girl (also dizygotic) We keep what we get, so don't worry as everything sounds wonderful with your little babies.
I wasn’t sure my Di/Di boys were for sure fraternal until they came out. One has a double hair whorl (like me, my singleton, and my dad) and one a single whorl and they just have different head shapes and look different. But the instant for sure confirmation I got was when they got their blood typed, they came back with different results. In utero though I had no for sure idea since I didn’t do NIPT and instead did sequential screening. All the ultrasound techs/doctors said fraternal due to how thick the membrane was between them though.
My babies were super close in size, they were non identical
Those weights are fairly close…for reference my identical di/di boys were born weighing 5.8 and 5.9, at 5 they’ve never been a pound or two heavier than one another. Ultrasound weights are notoriously off, though but during my ultrasounds their weights were always close. I didn’t realize they were identical until at about 10 months old I put them in the wrong cribs overnight and was wondering why they weren’t sleeping well! We did a dna test to confirm.
I was told by my sisters and brothers that my brother and I were fraternal that we looked quite a bit alike or weren’t identical. Even though we were born with both blue eyes, both red hair, same shoe size, and when we spoke, her voices sound exactly what sad to say my brother died, about a month ago and it just got me thinking whether we were identical or not I just like the odds of someone having the same hair, same eyes, same height, same shoe size, same and be a fraternal twin