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What are twins born at the same time but do not look alike called?
Fraternal twins.
Is fraternal twins an example of cloning?
No. They are the same as any brother or sister but they are born at the same time.
What kinds of twins are there?
Identical and Fraternal There are identical and fraternal. Fraternal twins happen when 2 different embryos start growing at the same time, so you get a brother and a sister or 2 sisters or 2 brothers that are the same age. Identical twins happen when 1 embryo splits into 2 embryos when it is only a few cells big, so both babies have the same genes.
What is the difference between dizygotic twins and monozygotic twins?
Dizygotic twins develop from two separate ova fertilized by different sperm at roughly the same time, they are also called fraternal twins. Monozygotic twins develop from one zygote that splits apart producing genetically identical zygotes; also called identical twins.
Do twins have to have the same color hair?
Not all the time if they do and look the sane then they're idendentical twins, if they look totally opposite they they're fraternal twins
How does identical and fraternal twins happen?
If one egg is fertilized and as it begins to grow it divides into two separate zygotes (fetuses) then they can develop into identical twins. If two separate eggs are both fertilited at the same time they will develop into fraternal twins
Are fraternal twins born at different times?
Yes, while twins both develop at the same time in the same womb, one can only give birth (naturally or by cesarean section), in sequence. "Fraternal" means they are brothers, both embryos were male.
Are fraternal twins technically clones?
No. Not even close. Fraternal twins result from two eggs fertilized by two sperm at about the same time and being implanted in the uterus together. They are siblings.Not even identical twins, by the way, can be considered as clones, because cloning involves the removal of genetic information from one cell with its transfer to another cell. Identical twins involve splitting, not cloning.
Which type of twins develop from two fertilized eggs?
Twins from different eggs are fraternal twins. They are siblings with the same birthdate. They are twins, but not identical, and can even be girl and boy. It is the same process taking place as a single child that a woman becomes pregnant with, but the process happens with two children at the same time. The woman releases two eggs that month instead of one, and they both are fertilized. That is how this type of twin is produced.
Why might genetically identical twins have different phenotype?
This is because fraternal twins are simply two full siblings that happen to share the womb at the same time. There is no more reason for fraternal twins to be the same than there is for any brother/sister, brother/brother or sister/sister sibling set to be the same.
Who is elder in fraternal twins?
They are rarely, if ever, delivered at the same time. So the one who is delivered first is the elder.
How is a fraternal twin different than other twins?
Fraternal means "brother-like." Identical twins result from a single fertilzed egg dividing into two separate embryos so the twins share all DNA. Fraternal twins result from two different eggs being fertilized by two different sperm at the same time. The babies are then born at the same time, but only share 25%of their DNA with each other, which is the same amount that siblings born at different times share. The word fraternal used in social organizations, like "the fraternal order of"...refers to the thought that the members are like brothers to each other. Modern french uses the word frere to mean brother.
