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No. In order for them to be identical they needed to start off as the same cell and divide so at first their DNA is identical meaning they have the same sex. During development slight changes may occur but the sex always stays the same. Boy-girl twins are always two different cells meaning that they are not identical. The term for boy-girl twins is furturnal. You can however have boy-boy twins and girl-girl twins that are not identical and they are also called furternal. So basically, identical twins start off as one cell that divides and furternal are two individual cells.
There is polar body twinning, that's when the egg splits before fertilization, and that can cause a male and a female. This is called semi identical twins or half twins. They share 75% of their genetic markers.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoMonozygotic twins can have different genders, although it is almost always two children of the same gender. The DNA is also nearly identical, which makes it much more likely that they will be almost exactly the same in every physical way (granted there are no external influences on the developing embryos).
Wiki User
∙ 14y agomy question is : monozygotic twins always have the same sex or they may be of different sex ? i.e. though the twin are identical, they may be a boy and a girl ? Identical twins are the same sex, but there is such thing as polar body twinning, that is when the egg splits before fertilization.Which that can make a male and a female. That is called semi identical twins or half twins. They share about 75% of their genetic markers.
Wiki User
∙ 11y agoSome twins are identical twins, other are not identical twins. Identical twins develop from a single fertilized egg that subsequently splits into two zygotes. Non-identical twins, also called fraternal twins, develop from two different fertilized eggs.
Wiki User
∙ 14y agoYes, they can! But it is extremely rare and I am not sure how it happens. : )
Wiki User
∙ 12y agoNot necessarily. "Same sex fraternal" twins are more common than many people realize.
Wiki User
∙ 12y agoNo. Boys and girls are different, so they cannot be "identical" twins.
At the cellular level, a female has two "X" chromosomes, while a male has one "X" and one "Y" chromosome.
Wiki User
∙ 14y agoNo; if twins are fraternal then they can't be identical.
Brenda Caldwell
Yes because I have some indentical twins a boy and a girl!
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Can brother and sister dogs breed?
only if they are from good familys but let me ask you would you mate with your brother or sister
Are there two animals that look exactly the same?
people do look the same but we all have a least one characteristic that makes us different. DNA is so complex and everyones is different. so really no two people can look EXACTLY the same but they can look similar only exception is twins
Will the girl still have a menstal after being neuter?
First of all no girls are neutered. Boys are neutered. Only in dogs and cats. Not people. If you have a female pet, it has been spayed, then no, its heat cycle will stop.
Can horses give birth to twins?
Horses normally only give birth to one foal at a time. It is actually pretty rare for a mare to have twins.
Can elephants give birth to twins?
it is extremely rare for an elephant to have twins, but if it did one of the twins would die of starvation because the mother only has enough milk for one of the offspring
How many ova needs to be fertlized in quadruplets 2 boys 2 girls?
It depends on if the boys and/or girls are identitical. If the boys AND girls are identical than only 2 ova would have been fertilized. If just the boys or girls are identical and the other 'set' is not than 3 ova would have been fertilized. If none are identical, than 4 ova would have been fertilized.
Can you clone memories also?
No. Cloning only makes what are like identical twins, and identical twins do not have the same memories.
Do boys and girls go to the same school together in Ireland?
There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.There are schools where both boys and girls go. There are also boys only schools and girls only schools.
Does my sister have the same DNA as me?
Only if you are identical twins.
If a boy and a girl are twins are they faternal twins or twins?
Twins can only be identical if they are the same sex. If they are boy and girl, they are fraternal.
What percent of genetic makeup is shared by identical twins?
100%Identical twins develop from the same egg, so have the same DNA. The only thing different between identical twins is finger prints, and retinal patterns.
What is the different between identical twins and franternal twins?
The DNA of identical twins and of clones is, apart from random, environmentally produced mutations, 100% identical. The only difference is that clones are produced on purpose through advanced bioengineering techniques while identical twins happen as an accident of nature. Identical twins are, in a sense, natural clones.
What are the chances of identical twins having twins themselves?
Women who are themselves fraternal twins have a 10% chance of producing twins, identical twin women have only a 0.6% probability of having a twin birth.
Why are some twins identical and some not?
The reason why some twins are identical and some are not starts in utero. Identical twins occur when one egg is fertilized and it splits to create two embryos. Nonidentical twins come from different fertilized eggs.
Why must any differences between identical twins be controlled only by the environment?
Identical twins have the same DNA - meaning that without the effects of environment they would be identical in every single way.
Do boys and girls have the same routine in Irish dancing?
There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.There are some done by boys only, some by girls only, and some that they do together.
How many chromosomes do identical human twins have?
Assuming their are no mutations the twins wold both have 46 chromosomes. Twins, have the normal number of chromosomes, the only difference between an set of identical twins and two average individual is that twins have identical DNA.
