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Crazy With Twins

The beautiful, funny & unsightly truths about raising 4 children (including twins).

You are here: Home / Baby development / Place your bets: Are my daughters identical twins or non identical twins?

Place your bets: Are my daughters identical twins or non identical twins?

24 November, 2014 by Emma MacDonald 19 Comments

Identical twins or non identical twins

After two and a half year’s of hearing the question, “Are they identical?”, we are fed up of answering with, “I don’t know”. This obviously leads to numerous other questions, and when all you wanted was a pint of milk in the supermarket, that soon becomes annoying! Aside from which, I genuinely WOULD like to know if my twins are identical or non identical. I’d like to be able to tell them, when they are old enough to ask.

So, we are getting a zygosity test done, by DNA Solutions. Today we took cheek swaps, from both twins and packaged them into an envelope and sent it off for analysis. I don’t know how long it will take to get a response, but I’m excited about it.

wpid-imag8286.jpg

For those who don’t know…

Identical twins are caused by one sperm, fertilising one egg, and then the egg splits into two embryos. The twins have identical DNA.

Non identical twins are caused by two eggs, fertilised by two sperm and have 50% of the same DNA – just like any siblings with the same parents. 

Semi-identical twins, although extremely rare, is caused by two sperm, fertilising one egg, before the egg splits. Meaning the twins carry identical DNA from the mother, and Non Identical DNA from the Father. Only one case of semi ID twins in the world, have ever gone public. 

The majority of people only get the straightforward ID / Non ID zygosity test, which is probably why there are so few cases of semi-identical twins in the world. But I am a curious creature, so I am having the full test done.

I personally, as Tiny and Fluffy’s Mummy, don’t think they look very much like each other. But there are some days, when they do. Some days, when we get them mixed up (but only for a split second!).

So here’s where you can get involved (just for a bit of fun)…

Here are some photos of Tiny and Fluffy. I would like you to guess…

Do YOU think our twins are Identical, Non Identical, or Semi Identical?

wpid-imag0100.jpg terrible two's with twins Siblings

 

Which type of twins, do you think Tiny and Fluffy are?

View Results

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I will blog the poll results AND the DNA results, as soon as the DNA results come through.

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Filed Under: Baby development, Family, Health, Medical, Parenting, Photography, toddlers, Twins, Uncategorized Tagged With: DNA test, identical twins, non identical twins, semi identical twins, toddlers, Twins, zygosity, zygosity test

Reader Interactions

Comments

  1. Kim Carberry says

    24 November, 2014 at 5:46 pm

    I think identical 🙂 x
    Kim Carberry recently posted..Our Weekly Meal Plan!! – #mealplanningmondayMy Profile

    Reply
  2. Beth Twinderelmo says

    24 November, 2014 at 6:26 pm

    I will be watching with interest! From all my scans & placenta I was told our are ID but like you I’m not sure as they look so different but now when I look back at photos of them as babies they do look so similar even though I never thought it at the time. Can I ask where you had the test done and how much it cost? I’m so curious about our girls xx

    Reply
    • Emma Day says

      24 November, 2014 at 8:18 pm

      If they told you they are ID then they are definitely ID. If they shared a sac and placenta then they are ID.
      If they have a sac and a placenta each, then they “assume” them to be non ID, but there is still a 30% chance of them being ID.

      I think I put in a link to DNA Solutions at the start of this post. That’s who is doing our test. Prices are on their website. The full test that we are having is £189 but the more straightforward test is about half that I think x

      Reply
      • Beth Twinderelmo says

        25 November, 2014 at 5:23 pm

        Fab thanks. The only thing that I often wonder about is that my placenta was 4 times the size of an average one so I wonder if it could possibly have fused that makes me wonder if they are ID x
        Beth Twinderelmo recently posted..5 Ways To GUARANTEE Your Kid Will Be Mary / JosephMy Profile

        Reply
        • Emma Day says

          25 November, 2014 at 8:07 pm

          Ah possibly!! X

          Reply
  3. Sophie Durrans says

    24 November, 2014 at 7:36 pm

    My mum is a twin. Growing up my grandad thought they were identical but grandma didn’t. When they were 50 they decided to find out. Turns out they are identical, don’t think either were happy about the result!

    Reply
  4. Downs Side Up says

    24 November, 2014 at 9:14 pm

    They look pretty identical to me, but actually (as the mum of a genetically mapped out kid) I’m quote surprised they don’t test at birth to find out. Hilariously I have a friend with boy and girl twins and she still gets asked if they are identical!!!
    Downs Side Up recently posted..Anti-bullying Week: Fighting the Statistics with LoveMy Profile

    Reply
  5. Clare @ Emmy's Mummy says

    25 November, 2014 at 9:32 am

    I reckon identical. Can’t wait to find out
    Clare @ Emmy’s Mummy recently posted..My Mischievous ToddlerMy Profile

    Reply
  6. HelpfulMum says

    25 November, 2014 at 10:18 am

    They look amazingly identical. I’m not surprised you want to find out.

    Reply
  7. Alice says

    25 November, 2014 at 10:42 am

    In the first two pics they look completely different.. But the one where they’re on the bed and when they’re with Bunny, they look identical!!

    Reply
  8. HELEN says

    25 November, 2014 at 10:43 am

    I think identical, they look too similar not to be – my friend has identical boys & they are looking more & more different as they get older
    HELEN recently posted..A Next ChristmasMy Profile

    Reply
  9. nortonmum says

    25 November, 2014 at 5:27 pm

    This is so interesting Emma, I bet yours turn out to be the unusual semi-identical, will wait to see.
    Lorraine x
    nortonmum recently posted..Tommy’s get tech My Premature Baby AppMy Profile

    Reply
  10. El and Baby A says

    25 November, 2014 at 5:30 pm

    Oh I am so excited to hear the result haha – I think they are identical but semi ID sounds really interesting 🙂 x
    El and Baby A recently posted..Christmas Collection | Link upMy Profile

    Reply
  11. Jenny @ The Brick Castle says

    25 November, 2014 at 10:30 pm

    This is fascinating and I’m really intrigued. I have a friend with 2 sets of twins who are both identical (super rare) and another with 2 sets of twins who look identical, but her boys are and girls aren’t!. I’m going with non-identical because I can tell your beautiful daughters apart 🙂
    Jenny @ The Brick Castle recently posted..Christmas Gifts for the man (or woman) who has everything….My Profile

    Reply
  12. Natalie Ray says

    27 November, 2014 at 12:08 am

    Oh bless them. I think they look very similar but I’d say non-identical. We saw you at the ice skating today, my little girl kept asking if one of your girls could sit on the push along thing with her. It must be lovely for them having company, Libby can’t wait for Lia to be old enough to play with her at things like that. I hope you had a lovely day, we thought it was fabulous.xx
    Natalie Ray recently posted..Christmas at Webbs, WychboldMy Profile

    Reply
    • Emma Day says

      27 November, 2014 at 10:51 am

      Ah you should have said hello! Mine would have loved to play with your little girl x

      Reply
  13. Michelle Twin Mum says

    27 November, 2014 at 11:38 pm

    As another twin mummy I went for Non-ID too. Were they in one sac or shared one? Mich x
    Michelle Twin Mum recently posted..Buying Beautiful Ethical Gifts and a Super #GiveawayMy Profile

    Reply
    • Emma Day says

      28 November, 2014 at 12:23 pm

      Two sacs two placentas x

      Reply
      • Michelle Twin Mum says

        10 December, 2014 at 10:48 pm

        Ohh but ended up ID anyway, clever stuff!
        Michelle Twin Mum recently posted..In His TimeMy Profile

        Reply

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