Cloning Animals

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  • Created on: 22-01-13 12:47
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In animals the embryonic cells are naturally capable of
going through stages to make a new individual.
They can also be described as totipotent stem cells
because they have the potential to differentiate into
any type of adult cell type found in the organism. They
are able to `switch on' any of the genes present in the
There are TWO METHODS:
Splitting embryos `artificial identical twins'
This method was developed in 1979 and has been used to clone sheep, rabbits, cattle
and toads. In 200 the first primate to be cloned this way was a rhesus monkey called
Nuclear Transfer: Using enucleated eggs.

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A differentiated cell can be taken and its nucleus placed in an egg cell which has had its
own nucleus removed. The cell is an enucleated. The first animal cloned by this method
was a sheep
called Dolly (in
honour of Dolly
Parton). The cell
was taken from a
mammary gland
in a 6 yearold
ewe (female
sheep), its
transplanted into
s cell from a
second sheep
and the inserted
into the uterus of a third sheep, and then a fourth to develop.…read more

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Nonreproductive cloning is all about using cloned cells to generate cells, tissues and
organs to replace those which have been damaged by disease or accidents.
By having genetically identical cells to an individual the body will not reject
them because they will not be recognised as foreign.
Could stop the issues of waiting for donor organs to become available.
Cloned cells can be used to generate any cell type because they are
totipotent.…read more


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