Cloning is, in theory, a very simple procedure. Every cell in a mammal's body has the same DNA. If I extract that DNA and put it into a fertilized egg of that species, that egg will divide and grow into a genetic copy of that organism. The transplantation takes only a few minutes. Then the egg grows and divides normally.

Problems arise when the egg is removed from the body for the transfer, then the fetus is typically put back into the uterus of the mother. This operation takes several days and is the most difficult part of the procedure. For example, if you were to be cloned, assuming everything went OK with the transfer and implantation and gestation, the clone would be born in the standard 9 months and grow up at the same speed as everyone else.

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cloning