In 1997, the Roslin Institute in Scotland successfully cloned a sheep, which raised the question of whether cloning a human is possible. Ordinarily, species produce special sex cells. Male produce sperm and female produce egg. Each of them carries half of the information to produce a new individual known as Zygote. Half of the inheritance comes from the male’s side and other half comes from the female side. However, in cloning involves nonsexual cells which carry all the “information from adult cell to make a new individual” (Cloning: how and why, video). From 277 special cells developed 29 embryos which were microinjected into thirteen

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