answersLogoWhite

0

The reason why some twins are identical and some are not starts in utero. Identical twins occur when one egg is fertilized and it splits to create two embryos. Nonidentical twins come from different fertilized eggs.

User Avatar

Wiki User

17y ago

What else can I help you with?

Related Questions

Do identical twins always share a placenta?

No, identical twins do not always share a placenta. In some cases, identical twins may have separate placentas.


Do identical twins share the same placenta during pregnancy?

Identical twins can share the same placenta during pregnancy, but it is not always the case. In some instances, identical twins may have separate placentas.


What are two horses with identical genes called?

Identical twins. Although horses sometimes have twins I'm not sure if they have identical twins.


Why identical twins are similar?

If they were not then they would not be called identical twins!


What percentage of twins are identical?

Approximately 30 of twins are identical, also known as monozygotic twins.


How are twins identical?

Twins are identical because they come from the same egg.


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.


How do you get identical and non identical twins?

Identical twins are formed when one fertilized eggs splits. Non-identical twins are formed when two separate eggs are fertilized.


Do identical twins have identical brains?

No they do not. Identical twins have identical DNA structure, and therefore they have very similar cell structure, leading them to have vastly similar organs (same size, health issues, etc.). However, everyone, even identical twins, do not share the exact same organs. Some identical twins get migraines, while the other doesn't. In some cases, one twin will be homosexual and the other heterosexual. In any case, by nature, identical twins do not have identical brains, and by nurture they experience different things, learn different things, and process information in different ways, resulting in the twins having differing opinions, etc. No two brains are exactly alike.


If I had identical twins 3 years ago what are my changes of having another set of identical twins?

The same as when you had the first set of identical twins.


A zygote that separates into two clusters of cells insted of just one prduce?

Non identical twins.


Do identical twins have identical footprints?

No.