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Fraternal twins occur when two fertilized eggs are implanted in the uterine wall at the same time. When two eggs are independently fertilized by two different sperm cells, DZ twins result. The two eggs, or ova, form two zygotes, hence the terms zygotic and biovular.
Identical twins occur when an egg splits into two; which makes them identical. Identical twins are not hereditary like fraternal twins can be. It is complete coincidence.
Wiki User
∙ 13y ago
Wiki User
∙ 16y agoBecause they were grown from different cells. Identical twins come from the same cell that splits in two (or more) and creates two separate people.
Wiki User
∙ 12y agoSome people think identical means all the same. It does. They call identical twins identical twins because the are almost identical. All finger prints are different.
Wiki User
∙ 14y agoFraternal twins are from different egg and sperm which cause them to be like normal siblings except for the date of birth
Wiki User
∙ 12y agoFraternal twins happen when a woman ovulates two eggs instead of one and both eggs are fertilized.
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What is the name for twins that look different?
Paternal Non-Identical fraternal twins
How can a mutation cause identical twins to look different?
Yes, in both cases.The mutation causes both of the identical twins to look different from the rest of the family.The mutation causes one of the identical twins to look different from the other twin. That is, the mutation happened shortly after the cells that gave rise to both twins divided.
What are twins that dont look alike caled?
Fraternal. They develop from separate ova and are not genetically identical, so look different, can have different sex etc. Unlike "identical twins."
Do children ever look exactly the same when?
Children never look exactly alike unless they are identical twins. Even identical twins often have some differences in their looks, their fingerprints differ, and they may have scars or other features that look different.
Can full sisters look very different?
Yes. Only identical twins look alike; full sisters (and fraternal twins) can look completely different since they take their inherited charachteristics from both parents, who can be of totally different appearances.
Why twins look different?
Fraternal twins are different eggs and sperm so they are like regular brother and sister except they are born together
Are paternal twins identical?
I dont think there is such a thing as paternal twins...perhaps you are thinking of fraternal twins. In that case, they are not identical twins, they do not look the same and they can be different sexes.
If identical twins married identical twins could at least some of their kids look like twins?
Acctually, they're children would not look like twins. But all of their children would look like brothers and sisters.
Are Brittany and Cynthia Daniel identical twins or fraternal twins because they look a bit different from one another?
FRATERNAL
Is brisco and flocrida twins?
You mean Flo-Rida? No, They look totally different.
Why are some twins identical and some not?
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.
Differences between identical and fraternal?
identical twins are from the same egg cell that split, but ferternal twins are from 2 entirely different fertilized egg cells. Thus identical look the same and ferternal can look entirely different.
