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What are fraternal twins?


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Answered 2010-10-25 01:17:41

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

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Another name for fraternal twins is dizygotic twins.



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.


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


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


Yes, fraternal twins are perfectly normal.


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


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.


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.


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


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


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



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


Fraternal and identical 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.


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


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


No; if twins are fraternal then they can't be identical.


If two eggs are fertilsed you get fraternal twins whereas if one egg is fertilised and that develops into two individuals, you get identical twins.


Fraternal twins. Fraternal twins can be the same gender too, but since they are produced from two eggs from the mother, they are not identical.



Identical twins come from one egg and one sperm. Fraternal twins come from two eggs and two sperm.


The chances of a fraternal twin having a fraternal with is 6 out of 20



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