... process is artificial twinning which is a process of splitting the embryo into two or more embryos. First an egg cell is fertilised by sperm, then left to grow into an embryo. The embryo is split into two or more embryos when it is still in the early stage of development. The split embryo are nurtured into new embryos, all genetically identical, then implanted into the surrogate mother to grow. This is not the same as nuclear transfer as the born animal has biological parents and is a clone of its brothers and sisters. Cloning of mammals has proven to be difficult and has only developed in the past few years through a long line of research. 3In 1997 came the most famous sheep of all Dolly who was cloned using a cell from an adult sheep. She represented a new departure because she was the first mammal to have been cloned ...

See this essay or coursework document in full right now