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Identical twins, or monozygotic twins are formed from one zygote. This is usually a result of damage to the embryo that causes it to split into two. If both halves are big enough to survive and the split has happened early enough on then two badies sharing one amniotic sac, one placenta and the same DNA will be born.
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∙ 15y ago
Wiki User
∙ 14y agoNon identical twins are produced when the mothers egg and fathers sperm join together to fertilise as usual to form a zygote but the zygote soon starts to divide into two separate cells but the cells both carry the same genes.
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∙ 10y agoIdentical twins are made form a single egg which has been fertilized and breaks off into 2 embryos, thus creating twins. Having twins may not be hereditary and could be just a random occurrence.
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∙ 9y agoA monozygotic triple pregnancy is event in which identical triplets are conceived. This occurs when a single fertilized egg slits to form three identical babies.
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Psychologists use what to determine the role that heredity and the environment play in determining trait?
Psychologists like to use sets of identical twins for studies. If the identical twins turn out more similar than fraternal twins or regular siblings, they conclude that the trait is genetically influenced and hereditary.
How many identical are born in the us?
Since 1989 there have been an average of 56,136 sets of twins born each year in the US.
Who are clones fraternal twins or identical twins?
Identical twins, due to the fact that the one fertilized egg splits, have identical DNA. Fraternal twins, since they are from separate eggs, have different DNA.
How do you know if two twins are identical or just fraternal twins that look a lot alike?
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
Are identical twins more common than fraternal twins?
it was 1/250 just for twins, but identical is more common then futurnal
4 sets of identical twins per 1000 births?
Yes, there is 4 sets of identical twins in every 1000 births.
Do the duggers have identical twins?
Yes, they have 2 sets of twins, one is fraternal and one is identical. The identical set is John David and Jana.
How many sets of identical twins were born in 2007?
1000
What is the name of shakespeares play about twins?
The Comedy of Errors is about two sets of identical twins. Twelfth Night is also about twins.
How are indentical twins made?
when one egg is released and it splits into two then four then eight but the eight splits into two sets of four and then when it is fertilized they are identical twins but if when they split into two sets of four one doesnt split properly that is when the twins can be joined by any part of ther body from skull to hips to feet
How do non-identical twins get made?
the egg divides
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!
Psychologists use what to determine the role that heredity and the environment play in determining trait?
Psychologists like to use sets of identical twins for studies. If the identical twins turn out more similar than fraternal twins or regular siblings, they conclude that the trait is genetically influenced and hereditary.
Why are identical twins identical and fraternal twins are not?
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 doctors to recognize identical or fraternal twins during pregnancy?
Identical twins are born when a single fertilized egg splits and develops into two fetuses. Fraternal twins are born when two separate eggs are released and fertilized. Identical twins take a long time to separate within the womb, and sometimes they don't separate entirely (conjoined twins). If doctors observe the two fetuses are connected at any point, that means identical twins. You can also do a DNA test on the amniotic fluid surrounding the fetuses. If there are two sets of DNA present, it means fraternal twins. If there is only one unique set of DNA, it means identical twins.
How are twins identical?
Twins are identical because they come from the same egg.
