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Answered 2011-10-01 22:15:15

In the US, the incidence of fraternal (dyzygotic) twins is 32 in 1000 live births.

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Related Questions

What are unidentical twins called?

How do fraternal twins form? Answer one egg from each ovary is fertilized.

How common would it be to have twins?

you have about a 1 in 60 chance of having natural fraternal twins.

What is another name for fraternal twins?

Another name for fraternal twins is dizygotic 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.

What is the name for twins that aren't actually twins?

identical twins are single egg twins. fraternal twins a two egg twins. fraternal

Are fraternal twins never the same sex?

Fraternal twins can be the same sex or opposite sexes. It doesn't matter.

Are fraternal twins each able to have children?

Yes, fraternal twins are perfectly normal.

Do fraternal twins come from the same egg?

No, identical twins do, but fraternal twins come from 2 separate eggs.

Are fraternal twins identical?

No that's why theyre called fraternal twins. Identical twins are identical (share the exact same genes) while fraternal twins are as similar to each other as normal siblings are.

What are fraternal twins?

Fraternal twins are two siblings that have the same birth day, but do not look identical.

Non indentical twins?

Fraternal twins.

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.

Are identical twins more common than fraternal twins?

No, about 1 in every 3 twins is an identical twin. Source: http://twins.usc.edu/about.htm

Do fraternal twins have the same fingerprints?

No, fraternal twins do not have the same fingerprints, because everyone no matter what has different fingerprints. not even twins.

What is combination of chromosomes XY for fraternal twins?

If two fraternal twins have the XY sex chromosomes, they will be male.

What is the difference identical and fraternal twins?

Identical twins come from the same fertilized egg; fraternal twins come from 2 fertilized eggs.

What are the 2 kinds of twins?

Fraternal and identical twins.

Can fraternal twins also be mirror twins?

Mirror Twins are always monozygote twins. This does not mean that fraternal twins won't be a righty and a lefty - if your family tends to run left handed.

Are all twins identical?

No. Identical twins are identical. Fraternal twins are not.

Do fraternal twins have the same genotype?

No, the genotype of fraternal twins is no more similar than any two siblings.

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