1. Cloning
As early ass 1952, scientists first demonstrated that they can remove the nucleus from frog egg, replace it with an embryonic frog cell, and then allow the egg to develop into a tadpole. ... Stem cells are extracted from the egg after it is divided for 5 days and is now called a Blastocyst. ... Mitochondria which are the energy sources of the cell, have their own short DNA segments. ... In somatic cell nuclear transfer, nuclear material from donor adult cells is transferred into an egg which has been denuded off its nucleus. Chemical treatment with a substance like Ionomyan is given to the...
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