Therapeutic cloning is used when DNA is taken from a sick organism, and then inserted into a donors egg. After this process the egg acts like any fertilized egg. Stem cells are removed from the embryo, and then any kind of organ or tissue can grow from these stem cells to treat diseases.
DNA cloning is used to clone an existing animal. For this cloning tecnique to work the DNA from an ovum (female reproductive cell) is removed and replaced with the DNA from a cell removed from an adult animal. It it is then fertilized and called a pre-embryo, and develop into an exact clone.
Nuclear transfer was used in the cloning of Dolly the sheep. For this process to work you need DNA from an organism (somatic cell) that is placed inside an unfertilized egg where DNA from the female is removed. It needs to be removed for it to be a clone, because a clone can only have the DNA from one organism.
DNA cloning is used to clone an existing animal. For this cloning tecnique to work the DNA from an ovum (female reproductive cell) is removed and replaced with the DNA from a cell removed from an adult animal. It it is then fertilized and called a pre-embryo, and develop into an exact clone.
Cloning can be used for many things. A good example of what it could be used for to help is cloning farm animals. This way the farms would get double the animals for help, meat, or wool.
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