Steps of reproductive cloning:
1-Remove a mature somatic cell from an animal that you wish to copy .
2-Transfer the DNA of the donor animal's somatic cell into an egg (oocyte) that had its own DNA removed and this can be done by 2 ways
A- Remove it with a needle and inject it into the empty egg
B-Use electric current to fuse the entire somatic cell into the empty egg cell
3-The egg is allowed to develop into an early stage embryo in test tube and then implanted into a female animal uterus (surrogate mother)
4-The female will give birth to an amimal has the same genetic material as the animal that donate the somatic cell
An example for a reproductive cloning process is "dolly the sheep"
*** Do cloned animals always look identical?
The answer is No!!
Although they share the same genatic materials the environment play an important role in how the organism turn out.
The first cat to be cloned is a female calico cat "cc" that looks very different from her mother ...the explanation for the difference is that the colour of the cat coat can't be attributted to gens but to a biological phenomenon involving inactivation of x- chromosome in every cell of female cat determine which coat colour genes are switched on and which are off and this distribution of x-inactivation ,which seems to occur randomly,determines the apperance of the cat's coat .
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