Generally, no normal animal can reproduce naturally cloning. Sometimes some insects and many plants produce clone under certain circumstances. But they do not produce clone regularly.
Procedure of Cloning:
Scientists in Scotland a sheep in 1997. Some other mammalian species like mice and cow have been cloned . TWO producers are adopted for cloning.
- Organism Cloning:
- Nucleus from a fertilized egg is removed.
- An other nucleus from a fully developed individual is taken. This nucleus is inserted into the fertilized egg.
- The altered zygote is implanted in a suitable womb. It complets its development there. The new individual formed is a genetically identical clone of the individual who's nucleus was used . In this way cloning can make multiple ( many ) copies of a desired genotype.
Embryo Cloning:
It is an other type of cloning. In this case, there is division of single or early embcryo into one or more separate embryos. Each embryo develops a new identical clone. Same process produced identical twins.
The offspring of this type of Cloning are genetically identical . But they cary chromosoms of the both parents. This type of the cloning is used for producing identical cattle and other form of animals.
" Importance of Cloning"
- There are commercially valuable animals of known pedigree. Man can produce such animals by cloning like hours, etc
- Some biologists are trying to clone human embryo. It can be used to donor for the transplant of organs. There is much controversy to clone human or not.
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