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How many egg cells are used with twins?
It depends on the type of twins If It was identical (monozygotic) twins, one egg is fertilized (As you can see, identical twins have similarity in phenotype (the observable characteristic of an organism) because of development of one zygote divided into two embryos) but if it was non-identical twins, two eggs or more (such as triplets or quadruplets) are fertilized. The twins have differences in phenotype
Is there a word for twins who don't look alike?
Yes, non-identical twins are often referred to as fraternal twins. These twins develop from two separate eggs fertilized by two different sperm cells, resulting in genetic differences that can make them look less alike than identical twins.
Single cells split into 2 cells?
Mitosis is the process in which a cell divides and makes two daughter cells that are genetically identical to it. Chromosomes in the nucleus of the original cell separate and make identical sets of chromosomes, each of which is in its own nucleus.
Why do identical twins have slight differences at birth?
Because they are only truly identical after their cells first split into two embryos. After that, they will begin to divide independently of each other (using the same instructions from DNA). Since cell division is complex, they will not divide identically, which will make subtle changes in their construction. Since they are using the same instructions for cell division (from DNA) they will look remarkably similar, but not truly identical.
What is the ultimate goal of mitosis?
The objective of mitosis is for the cell to produce more identical cells. Meiosis occurs when the cell creates "child" cells for sexual reproduction.The objective of mitosis is for the cell to produce more identical cells. Meiosis occurs when the cell creates "child" cells for sexual reproduction.
How many egg cells are used with twins?
It depends on the type of twins If It was identical (monozygotic) twins, one egg is fertilized (As you can see, identical twins have similarity in phenotype (the observable characteristic of an organism) because of development of one zygote divided into two embryos) but if it was non-identical twins, two eggs or more (such as triplets or quadruplets) are fertilized. The twins have differences in phenotype
Why do you have twins?
There are two natural ways, one being when u ovulated u had one fertilized egg that split into two, which also would make them identical twins, and two when you ovulated there were two eggs that both got fertilized. Hope this helps. I have identical twins.
Why you have twins?
There are two natural ways, one being when u ovulated u had one fertilized egg that split into two, which also would make them identical twins, and two when you ovulated there were two eggs that both got fertilized. Hope this helps. I have identical twins.
Is there a word for twins who don't look alike?
Yes, non-identical twins are often referred to as fraternal twins. These twins develop from two separate eggs fertilized by two different sperm cells, resulting in genetic differences that can make them look less alike than identical twins.
Single cells split into 2 cells?
Mitosis is the process in which a cell divides and makes two daughter cells that are genetically identical to it. Chromosomes in the nucleus of the original cell separate and make identical sets of chromosomes, each of which is in its own nucleus.
What is the differences between identical twins and fraternal twins?
Identical twins arise from a single fertilized egg that for some reason split itself in two. Identical twins have exactly the same genetic make-up.Fraternal twins arise from two separate eggs. Sometimes both of a woman's ovaries will produce an egg cell at the same time. Each of these is fertilized by a separate sperm cell (of which there are always plenty) so they have different genetic make-up. They may share the same womb and be born at the same time but are no more closely related than true brothers.
What is the percentage of identical twins?
about 80% because most of the people i no are identical
Why do twins have the same faces etc?
Simply because identical twins have formed from the same egg. Their genetic make-up is identical - so their physical appearance is also the same.
Are the Bella twins identical twins?
No, they are ferternal. They have different colored eyes and one used to be shorter then the other. If you get any of their old movies you can tell. Mary-Kate usually has shorter hair then ashley, but that doesn't make them ferternal.
Are twins that can only be two girls or two boys identical?
No. In order for them to be identical they needed to start off as the same cell and divide so at first their DNA is identical meaning they have the same sex. During development slight changes may occur but the sex always stays the same. Boy-girl twins are always two different cells meaning that they are not identical. The term for boy-girl twins is furturnal. You can however have boy-boy twins and girl-girl twins that are not identical and they are also called furternal. So basically, identical twins start off as one cell that divides and furternal are two individual cells. There is polar body twinning, that's when the egg splits before fertilization, and that can cause a male and a female. This is called semi identical twins or half twins. They share 75% of their genetic markers.
Why do identical twins have slight differences at birth?
Because they are only truly identical after their cells first split into two embryos. After that, they will begin to divide independently of each other (using the same instructions from DNA). Since cell division is complex, they will not divide identically, which will make subtle changes in their construction. Since they are using the same instructions for cell division (from DNA) they will look remarkably similar, but not truly identical.
In a set of triplets how can two be identical and the other not like the two?
In triplets you could have 3 individuals that came from 3 separate eggs or you could theoretically have 2 eggs fertilized and one of the eggs split in two giving a set of identical twins and the other egg would give you triplets. Theoretically you can have identical triplets, if one of the eggs decided to split a second time (this would be a VERY rare occurance). In that case all of the babies would be identical. In triplets you you can have three individuals that came from three separate eggs, or you could have two eggs fertilized, and one of the eggs splitting to make identical twins while the other egg would give you triplets. If one of the eggs decided to split a second time this would result in identical triplets. [Identical triplets are very rare] only 1 in 1000 triplet births are identical.
