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Answered 2009-03-24 19:58:53

(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.

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They are just alike.......

Twins can either be identical or fraternal.Identical twins are obviously identical, and fraternal twins aren't. Fraternal twins are still born at the same time, hence the name "twins", but they do not look exactly alike. It is perfectly plausible for fraternal twins to look the same, but not be identical. Many fraternal twins appear to be identical, but are really not.Also, even identical twins don't stay the same height/weight their whole lives. Their height and weight would depend on their diet and exercise. If one was an active, healthy, person, and the other was a couch potato, they both wouldn't always be the same weight just because they are twins.

Yes, it's possible for a mutation in the chromosome to produce otherwise-identical twins with opposite genders. But generally no, identical twins have the same gender. (but fraternal twins have different genders just as often as any siblings)

A litter is really just a big set of fraternal multiples. Occasionally there will be actual identical twins. Yes there can be twin kittens.

if twins run in the family u are more likely to have twins but most likely fraternal because identical twins are just a very unique coincidence

Fraternal twins are the product of two separate combinations of ovum and sperm at the same time, resulting in genetically different children with a shared womb.Identical twins are the result of one ovum-sperm combination, which then splits into two separate children who are genetically identical.If the two children born from one pregnancy are genetically near 100% identical (with consideration for mutations and genetic alterations after the split or post-natal), they are identical.If the two children have closer to normal sibling genetic similarity (around 50%) but just share a birth time, they are fraternal.Also, identical twins share the same gender. If twins are of different gender, they must be fraternal (though fraternal twins can be same gender as well).

Twins will always have different personalities, no matter if they're identical or fraternal, just because everyone is different, even if you're a twin. Identical twins will look almost exactly the same, but will have slight differences (different birthmarks, etc.) because that's just how the egg grows. Fraternal twins will not look the same at all, because they come from 2 seperate eggs.

i would have to say no because i am an identical twin and when you hear twin you think of identical ones. also fraternal twins aren't really twins because they are 2 separate babies that just happened to be fertilized at the same time.

Identical twins will have the same father, so a paternity test is done just like for any kid. With fraternal twins, it is possible, but very, very rare, to have different fathers for the babies.

No. Conjoined twins are always identical twins, and never just fraternal twins. Identical twins come from a single embryo that splits. In the case of conjoined twins, a complete split never occurs. So when they come from the same embryo, they are always the same gender.

Fraternal twins are made when two eggs are fertilized by two differents sperm so they are like brother and sister just born together

The probability is the same as if you had no history of twins in your family. There is no genetic component with identical twins, it is just something that happens. Fraternal twins occur if a mother "drops" two eggs in one month. Your father being a fraternal twin does not make you "drop" more than one egg in a month and so does not increase your chances of having twins. Your maternal grandfather being a fraternal twin did not effect your mother's ability to drop more than one egg and so did not effect your ability to "drop" more than one egg and so does not increase your ability to have twins.

because fraternal twins (non-identical) are just like any other siblings. Their genders have no connection with each other.

No, just the singer and the guitar player Bill and Tom Kaulits who are fraternal twins. Just Bill and Tom kaulitz are related. Their IDENTICAL twins they just don't look like it

Identical twins should. Mutations are the only exception. Semi-identical twins (whether this is possible is still argued) are more likely to have such. Fraternal twins might, but no more likely than siblings having the same blood type (which is, reasonably, common). Fraternal twins with different fathers are less likely to share a blood type, just as would appear with half-siblings. Then again, it is POSSIBLE for you to have the same blood type as your unrelated next door neighbor, but it is not likely. I am just telling you the probability of things.

Identical twins are formed by chance, when a single fertilized egg(ovum) splits into two. Fraternal twins develop from two eggs fertilized by two sperm, and are just individual brothers or sisters (siblings), born at different times.

Fraternal twins each have their own umbilical cord, just like they have their own sac. The two of them are just the same as two siblings with the same birth date.

Identical twins are identical because they both came from the same egg. The term "Identical" is used as they look very much like each other and anybody can say that they are twins by just looking at them.

Fraternal twins come from the fertilization of two different eggs. It can cause them to look almost the same, but they could just as easily be totally different, even different genders. Identical twins come from the splitting of only one fertilized egg, making them look exactly the same and they will always be the same gender.

it was 1/250 just for twins, but identical is more common then futurnal

Fraternal twins are different than other twins because they can be different genders. They also do not look just like one another. They are just like any brother and/or sister except that they born at the same time.

Just about anyone can have twins. However, when twins "run in the family", it only runs in the FEMALE half of the family. If your mother is a twin who has a mother who is a twin, and you're female, you have a higher chance of having twins yourself. If you're male, it doesn't matter. Only the female can "decide" to have twins or not -- the male is not included in the decision. (By "decision" I mean how the female's body releases her eggs or how the eggs divide.) There are two types of twins. Identical and fraternal. Identical occurs when a single fertilized egg develops into two embryos. Fraternal occurs when two eggs are fertilized. If fraternal twins run in a woman's family there may be a familial tendency to release more than one egg at a time and she may have a greater chance of having twins. Identical twins 'running' in a family is far less common. Many things can influence the likelihood of twins. The most typical being fertility drugs. A woman's age and parity (how many children she has already had) can also affect the likelihood of twins.

there is no such thing as paternal or maternal twins. the only type of twins there are is fraternal, and Identical. Identical twins are the result of one sperm fertilizing one egg and that fertilized embryo splitting apart and forming two fetuses, therefore the children are born identical, and thus must be of the same sex. Fraternal twins are the result of two eggs being fertilized at the same time by two different sperm, and the children will be born different from the other. As a result, they can be male/male, female/female, or female/male. also there is a very slim chance that fraternal twins can have two different fathers, as it can take up to two weeks after having sex for a sperm to fertilize an egg. so if a female has sex with multiple partners, there is a very small chance that the two twins could be from two fathers. just to clarify... there is no such thing as paternal or maternal twins

Too bad. I don't know. Go to a more reliable source. I just proved that answers here can be half-assed. Now go cry in a corner. Yeah, yeah.

I have an identical twin. For me it is no more likely that I will have twins than anyone else because identical twins are just flukes. If you are a non- identical twin and that is because your mother had two eggs, then you may have this too, and it is more likely you will have twins.

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