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Identical twins form from the same fertilized egg (zygote). When the zygote has divided a few times and formed a ball of cells, something causes this embryo to split in two. Each half then goes on to develop into a person. So the twins have identical genes. A technical name for such individuals is monozygotictwins.
Fraternal (or dizygotic) twins develop from two zygotes, formed from two different eggs (ova) fertilized by two different male gametes (sperms). So they are not necessarily any more alike than any other siblings.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoActually, identical twins are produced when an egg and a sperm join together but then divided into two.
Fraternal twins are two separate eggs fertilized by two separate sperm.
Wiki User
∙ 12y agoIdentical come from the same fertilized egg
Wiki User
∙ 12y agoSame way any child develops. The only difference is that in the very earliest stages the zygote breaks in half, forming two embryos.
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Why are identical twins identical and fraternal twins are not?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Are female twins that are not identical called Fraternal or Maternal?
Any set of twins that are not identical (whether it's boys or girls or a combination of the two) are fraternal twins.
Are felisha and fallon king from cherish identical or fraternal twins?
Yes they are identical twins
What is the difference between dizygotic twins and monozygotic twins?
Dizygotic twins develop from two separate ova fertilized by different sperm at roughly the same time, they are also called fraternal twins. Monozygotic twins develop from one zygote that splits apart producing genetically identical zygotes; also called identical twins.
If twins aren't identical what are they called?
Twins who are of the opposite sex or do not look alike are fraternal twins ~ not identical. This means that at the time of their conception ~ two eggs were fertilised. In the case od identical twins, one egg is fertilised and split in half.
What The scientific name for fraternal twins.?
Identical twins are called monozygotic. Fraternal twins are called dizygotic.
What is the difference between a fraternal twins and identical twins?
If two (or more) eggs are fertilised and develop together you will get fraternal twins. Identical twins are the result of a single fertilised egg dividing into two embryos.
Do identical twins develop from two different eggs that are fertilized by different sperm?
No, fraternal twins do.
How does identical and fraternal twins happen?
If one egg is fertilized and as it begins to grow it divides into two separate zygotes (fetuses) then they can develop into identical twins. If two separate eggs are both fertilited at the same time they will develop into fraternal twins
What percentage of twins are fraternal?
There is no precise percentage of fraternal or identical twins but it is estimated that 2/3 of all twins are fraternal where as 1/3 of twins are identical.
Why are identical twins identical and fraternal twins are not?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Why are identical twins and fraternal twins not the exact same?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Which is more common fraternal twins or identical twins?
Fraternal twins are more popular.
Why are Identical and fraternal twins similar?
They are twins!
What is the difference fraternal and identical twins?
Identical twins come from the same fertilized egg; fraternal twins come from 2 fertilized eggs.
Why are the twins identical?
Twins are not necessarily identical. They can be fraternal as well. Identical twins result when one fertilized egg splits in two. Fraternal twins result from two fertilized eggs.
How do you know if two twins are identical or just fraternal twins that look a lot alike?
(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.
