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Fraternal twins started from two separate eggs in the mother.

By comparison, identical twins started from one egg but it divided at the first stage of development into two separate zygotes (and thus two separate babies).

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12y ago
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1y ago

Fraternal twins are twins who develop from two separate fertilized eggs. They can be of the same or different genders and share about 50% of their genetic material. Fraternal twins are also known as dizygotic twins.

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Q: What is the definition for fraternal twins?
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Related questions

Why do you think identical twins were more alike than fraternal twins?

Fraternal twins share most of their genetic material, by virtue of having the same parents. Identical twins, however, by definition share 100% of their DNA. This means, for example, that identical twins cannot ever be one of each gender, as fraternal twins often are.


What are unidentical twins called?

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


What is another name for fraternal twins?

Another name for fraternal twins is dizygotic twins.


Which is more common fraternal twins or identical twins?

Fraternal twins are more popular.


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.


Are female twins that are not identical called Fraternal or Maternal?

Female twins that are not identical are called fraternal twins. Fraternal twins occur when two separate eggs are fertilized by two separate sperm. Maternal twins refer to twins that share the same mother but can include both identical and fraternal twins.


Why Can fraternal twins be different gender but identical twins are always the same gender?

fraternal twins have two different chromosomes


What are fraternal twins?

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


Are fraternal twins the same as paternal twins?

no