DEFINITION:
CLONE: A clone is defined as a cell or individual and all its sexuality produce offspring.
INFORMATION:
All members of clone are genetically identical except when a mutation occur.
GENERAL: Generally no normal animal reproduce naturally by coloning.Several insects and many plant do, in some circumstances whereas few do so regularly.
HISTORY: In 1997 scientist Scotland succeed in coloning of sheep.Other mammalian species( mice and cows) have since been coloned.In this nucleus from a fertilized egg is removed and a nucleus from a cell of a fully developed individual is inserted in its place.The altered zygote is than implanted in suitable womb where it complete its development. The new individual formed in this way is a genetically identical clone of the individual whose necleus was used.The coloning could make multiple copies of a desires genotype.
ANOTHER TYPE OF COLONING: Another type of coloning is the division of single egg or early embryo in one or more separate embryos.This is the same process that normally create identical twins.Offspring of this type of coloning are genetically identical but but carry chromosomes from each of the two paremtd. This type of coloning has already been used to produce genetically cattle and other form animals.
Man is likely to adopt coloning techniques for commercials production of valuable animals of known pedigree such as horses, etc.
At some places scientist are making attempts to clone human embryo which they believe can serve as transplant donor.There is lot of controversy on this issue as the whether human cloning should be attempt or not.
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