quinta-feira, 3 de janeiro de 2008


Cloning is the process of creating an identical copy of something.
In biology, it refers to processes used to create copies of DNA fragments (molecular cloning), cells (cell cloning), or organisms. The term also encompasses situations whereby organisms reproduce asexually.
Sometimes cloning is used at animals (like Dolly the Sheep the first successfully cloned mammal) like the reproductive cloning used at endangered species and therapeutic cloning with medical purposes.
There also exists the Human cloning that is the creation of a genetically identical copy of an existing or previously existing human. There are two commonly discussed types of human cloning: therapeutic cloning and reproductive cloning like the cloning done at the animals.
Human cloning is among the most controversial forms of the practice.

The immage is about one think that I mencioned before, the Reproductive Cloning used at endangered species.
This type of cloning was developed to help the growth of the populations in risks of extinction.
Maybe in ten years the generations will be almost formed by cloned animals, in the case of some species.

Um comentário:

Isabel neves disse...

I liked the image you chose although you could have explained it better . I'm sending you the corrections for your text by email