Interestingly, even the website for the twin study at U of WA specifically states that idential twins share ALL of their genetic material thus, in the rare circumstance of monozygotic boy/girl twins, they would not be referred to as "idential" at all since they don't share all of their genetic material There are NO IDENTIAL boy/girl twins yes they can be identical, mad I know BUT there is a lady Ange on the AMM She has b/g twins was told they were ID all through pg and then they were born one girl and one boy and she was very surprised; 30% of di/di twins are identical Whether they have one placenta or two and/or one amniotic sack or two has to do with the timing of the egg splitting I have two sisters with twins Both Sets are Di/Di Both got genetic testing after they were born Both sets are identical!!
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Can a boy and girl twin be identical
Can a boy and girl twin be identical- For identical twins to have different blood types, something needs to happen to one twin's DNA Small changes in DNA can and do happen so identical twins do have a few differences What makes them having different blood types so rare is that the changes have to be in just the right place out of over six billion different possible placesAn ultrasound scan of your placenta could offer some clues, but the most accurate way to tell if your twins are identical or fraternal (nonidentical) is with a DNA test performed after your babies are born
Rare Semi Identical Twins Born To Australian Mum From Two Different Sperm
DOCTORS say they have discovered the world's second known case of semiidentical twins born from one egg and two sperm The now fouryearold boy and girl, from Brisbane, Australia, are identicalIs it possible to have identical twins of different genders? If you've got boy/boy or girl/girl twins, you may have identical twins The trick is determining whether boyboy twins or girlgirl twins are truly identical or if they are fraternal
Identical (monozygotic) twins are always of the same sex because they form from a single zygote (fertilized egg) that contains either male (XY) or female (XX) sex chromosomes A set of boy/girl twins can only be fraternal (dizygotic) Boy/girl twins cannot be identical (monozygotic) Click to Doctors in Australia say they have identified a second case of twins apparently created from one egg and two sperm, a boygirl combination in whom the mother's DNA is identical in both babies but Moreover, if identical twins end up being different genders, the male with XY chromosomes may turn out normal, but the female with XO chromosomes might have Turner Syndrome Technically speaking, yes there are semiidentical or maternal twins can be a boy and a girl However, it is not without risk or genetic anomalies to the fetus
They checked the placenta and yip id They called polar twins I believe and are extraordinarily rare indeedBy Anonymous Actually, there can be identical boy/girl twins if the sex gene of the embryo has an extra x chromosome (the fertilized egg would be an xxy) then when the egg splits one can have xx (girl) genes and one can have xy (boy) genes Rare but possible Only 4 ever recorded cases"Are all samesex twins (boy/boy or girl/girl) identical (monozygotic)?" No, definitely not This is tricky—onozygotic/identical twins are nearly always the same sex either boy/boy or girl/girl Until very recently, in fact, experts thought monozygotic/identical twins had to be samesex
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How Do You Know If Your Twins Are Fraternal Or Identical
IT IS POSSIBLE to have identical twins of different genders, it may be extremely rare, but is definitely a possible phenomenon To know more about this myth, and all the other kinds of twins sets, do read my guest blog on Babychakra Types of Twins you Never Knew About! Fraternal twins will not be identical and can be either the same sex or a boy and a girl Identical twins This is when only one egg is fertilized, and the zygote splits into two early in pregnancy, forming two embryos Identical twins have the same chromosomes, and will look the same and be the same sex Implantation in the womb The one who looks like a boy has an XXXY mix of 4753;
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The two girls started out like all identical twins, developing from the same fertilized egg and the exact same set of DNA But when they were born last year they didn't look like identical twins One girl has peach skin and blue eyesBoy/girl monozygotic (identical) twinsBabychakra is the number 1 parenting app in India and is a new mom's best
Surprising Facts About Fraternal Non Identical Twins
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Young Brisbane twins, a boy and a girl, have been identified as only the second set of semiidentical, or sesquizygotic, twins in the world Young Queensland twins, a boy and a girl, have been identified as only the second set of semiidentical twins in the world – and the first to be identified by doctors during pregnancy The twins, who are identical on their mother's side but share only part of their father's DNA, are the first case of semiidentical, or sesquizygotic, twinsThere's no such thing as identical boy/girl twins Identical means that they have the same DNA Gender is in the DNA A boy can't have the same DNA as a girl because the boy's DNA would show that he was male and the girl's would show that she is female
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In 999% of cases boy/girl twins are nonidentical However, in some extremely rare cases resulting from a genetic mutation, identical twins from an egg and sperm which began as male (XY) can develop into a male / female pair This happens when the fertilised egg 'loses' one of the copies of the Y chromosome when it is dividing into two The boy and the girl, now four, from Brisbane, in Australia, are identical on their mother's side But they share only a proportion of their father's DNA The twins can be two girls, two boys, or a boy and a girl Identical twins occur when a single fertilized egg splits and develops into two fetuses Identical twins might share a placenta and an amniotic sac or the twins might share a placenta and each have separate amniotic sacs Genetically, the two babies are identical
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