[最も欲しかった] are there identical twins boy and girl 113193-Are there boy and girl identical twins

By 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 Identical, or monozygotic, twins may or may not share the same amniotic sac, depending on how early the single fertilized egg divides into 2 If twins are a boy and a girl, clearly they are fraternal twins, as they do not have the same DNA A boy has XY chromosomes and a girl has XX chromosomes Girlboy twins occur when one X egg is fertilized The terms identical and fraternal don't describe what the twins look like, but actually how they form 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 Fraternal twins can be either two girls, two boys, or one of each

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Are there boy and girl identical twins

Are there boy and girl identical twins-Twins of different genders are universally accepted as a sound basis for a clinical determination that boy and girl twins are not identical However, in extremely rare cases, boy and girl twins can stem from the same fertilized egg Twins, who stem from the same fertilized egg, are called monozygotic twinsAnswer (1 of 6) 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

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 George and Amal Clooney are now the parents of twins Amal Clooney gave birth to a boy and a girl today (June 6), People magazine reported Amal Clooney, age 39, and the fraternal twins The one who looks like a boy has an XXXY mix of 4753;Other rare twin types include "half identical twins" (when the egg splits and then each half is fertilized) and mirror image twins

I am an identical twin (and 31 years old), and just found this out about a month ago I was watching a show on the Discovery Health channel that talked about multiples, and how doctors are using the term "monozygotic" rather than "identical" now, because an egg can split and become one boy and one girl! 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 identicalWhen we first found out about the twins they thought they were sharing 1 sac, which categorized them as monoamniotic twins Research for "MoMo" twins shows that they are always identical and 75% are girls Luckily they are not sharing 1 sac, there is 1 membrane separating them, but they are 90% sure they are identical Report

 Basically, fraternal twins are as alike as siblings would be — in other words, they are not identical Fraternal twins might be two boys, two girls, or a boy and a girl Each baby develops in his or her own placenta Later in the pregnancy, however, the woman's doctors were surprised to see that the twins were a boy and a girl Because identical twins share all of their genes, they can't be of opposite sexes Its not possible Because being different genders makes them unidentical Identical twins occur with the splitting of 1 egg So if the egg that was fertilized was fertilized with a "Y" chromosome they will be a boy, or an "X" chromosome will be a girl If they egg splits, it can't change chromosomes once its fertilized

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At my 1st ultrasound they could only tell the sex of one of the babies a boy The other was in a position too hard to tell So my husband and I assumed identical twin boys given we had a Can identical twins be male and female?2 There are more than just fraternal and identical twosomes;

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Twin baby bracelet / bracelets for twins / initial bracelet / identical twins / personalized bracelet / name bracelet / newborn / boy / girl LenkasBracelets 5 out of 5 stars (3) $1144 Only 1 available and it's in 2 people's carts FavoriteNo Identical twins are essentially random and non identical twins are more common in some populations but it is not something you can naturally control Healthy twins with a boy and a girl were delivered at 37 weeks 0 days of gestation by a cesarean section The boy's weight was 96g, and his height was 450cm, while the girl's weight was 19g, and her height was 415cm Peripheral lymphocyte chromosome analysis of the two infants showed normal karyotype, 46, XY (boy) and 46, XX (girl)

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 Another site said that 1/3 of all twins are identical Others give different numbers If I take that first pair of numbers, we get the probability of two boys, or of two girls, is , and the probability of one of each is So each probability is about 1/3 That came from a quick search for frequencies of twins, just looking forThe girl has a mix of 9010 In the 07 case, one of the twins actually had ambiguous genitalia,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

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 A twin pregnancy with two placentas and two amniotic sacs is the optimal twin pregnancy, as each baby has its own nutritional source and protective membrane One placenta and two amniotic sacs In pregnancies with one placenta and two amniotic sacs, you will definitely have identical twins 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 identical Fraternal twins can be boy/girl, two girls, or two boys So no, your boy/girl twins are not identical There is an extremely rare case that can happen where the zygote splits to form identical twins but one of the pair doesn't get both sex chromosomes

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 Among nontwin births, males are slightly (about five percent) more common than females In the US, 105 nontwin males are born for each 100 nontwin females However, males are slightly more likely than females to die in the womb And because the death rate in the womb is higher for twins than for singleton births, Continue reading Are there more male twins or female twins Shakespeare really didn't know his twinnish lore – fraternal twins where one is a boy and one is a girl are never going to be identical Sticking to strict scientific truths however would prevent some awesome genderbending comedyAnswer (1 of 8) The reason why having kids within a family groups is not a great idea is the likelihood of loosing variability within the genome A reason for why this is bad is due to there are two copies of every gene within our genome There are many cases where if one gene is dysfunctional,

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 Marilyn responds You are (We're assuming fraternal twins Identical twins are always the same sex) These are the possibilities 1) Baby A is a boy, and Baby B is a boy; A boy and girl twins cannot be identical Monozygotic or identical twins are usually of the same sex as they are formed from a single zygote (fertilised egg) which contains either male (XY) or female (XX) sex chromosomes Just like siblings, fraternal twins share 50% of DNA from father and mother Fraternal twins represent twothirds of all twins Although there are reported cases of monozygotic twins or commonly known as identical twins to be of different sexes, there cases are extremely rare It is safe to assume that if twins born are of different sexes, 9999% of the time they are going to be dizygotic or fraternal twins and not identical twins

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Three Types of Twins We all know there are two types of twins identical and fraternal Now scientists are adding a third category to the list, semiidentical twins That said, there are some signs that your twins are dizygotic Your twins are most likely fraternal if they are different sexes or they have different blood types If you're wondering how boygirl twins could ever be identical, it can happen in some instances of2) Baby A is a girl

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 Boygirl twins are always two different cells meaning that they are not identical The term for boygirl twins is furturnal You can however have boyboy twins and girlgirl twins There is a genetic mutation that can occur in male identical twins before they're born which results in one of the twins losing a male chromosome and developing as a female However, even as an identical twin (male), I agree that it is stupid to ask boy/girl twins this question because of how rare it is for that genetic mutation to occur There have only been two reported cases of semiidentical twins, so this type is extremely rare In semiidentical twins, two separate sperm fertilize one egg The fertilized egg then splits in two

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Browse 785 identical twin boys stock photos and images available, or search for identical twins or boy girl twins to find more great stock photos and pictures twin boys (67) sitting, smiling, closeup, portrait identical twin boys stock pictures, royaltyfree photos & imagesCheck out this linkThe official website of Twins Research Australia 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

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I have identical boy twins and was told the other day that identical boy twins are pretty rare but that the rarest type of identical twins are identical Born First At my shower, I mentioned I was having a csection due to the position of my twins Meet The Boy And Girl Who Are Identical Twins Several years ago, an expecting mother was carrying identical twins a rare and joyous occasion, but known to happen from time to time At her 14 week scan, something more remarkable was discovered one of the identical twins was a boy, and the other a girl Fraternal twins can be boy/boy, boy/girl, or girl/girl Identical twins are the result of one fertilized egg splitting The split usually happens around days 4 or 5, after the placenta and sac have started forming Which means the two babies end up in the same sac, sharing the same placenta Identical twins are always boy/boy or girl/girl

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At six weeks there were two sacs, and we were told we were having identical twins! I contend they're 25 percent for two boys, 25 percent for two girls and 50 percent for one boy and one girl What are the 3 types of twins? A twin boy and girl may be identical, according to a study found on NCBI, although this situation is very rare Usually identical twins share the same gender they are either a pair or boys or girls In rare instances, however, identical twins form from an egg and sperm that begin as males (sharing XY chromosomes) then change to become a male

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 Three Types of Twins We all know there are two types of twins identical and fraternal Now scientists are adding a third category to the list, semiidentical twins Researchers say, semiidentical twins are more genetically alike than fraternal twins, but not genetically identical like identical twinsIdentical (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) 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

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 My b/g twins are 65 months old (I delivered at 371) I think they look a lot alike I get told mine look alike all the time and they are so different My girl is fair skinned, long torsoed, barely any hair, blue eyes My boy is olive skinned, short torsoed, a head of hair, and dark eyes

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