How does cloning work?
Cloning is a genetic weopen that will be used in future in genetics.Cloning is the process of creating an identical copy of something. In biology, it collectively 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. Main article: Human cloning Human cloning is the creation of a genetically identical copy of an existing, or previously existing human, by growing cloned tissue from that individual. The term is generally used to refer to artificial human cloning; human clones in the form of identical twins are commonplace, with their cloning occurring during the natural process of reproduction. Human cloning is amongst the most controversial forms of the practice.[4] There have been numerous demands for all progress in the human cloning field to be halted.
The nucleus from a mature, unfertilized egg, containing a single set of genes from the female, is removed and discarded. It is replaced with an adult somatic (body) cell from the donor animal, containing two sets of genes (one from each of the donor’s parents). Following the application of an electrochemical stimulus, the egg/cell “couplet” fuses, and the resulting clone embryo begins to divide like a naturally conceived embryo. After a brief period of growth in culture, the embryo is transferred into a recipient (a female of the same species, generally in estrus or hormonally-stimulated) as in conventional embryo transfer. In a matter of months — whatever the natural gestation period is for that species — she will give birth to an animal that is genetically identical to the donor animal.
