Animal cloning, Biology

Animal Cloning:

When entire animals are obtained from somatic cells of an animal, it is known as animal cloning. Cloning is usual in plants but in case of animals only some degree of success had been achieved so far.  In previous, nuclei from a tadpole were transplanted into the cytoplasm of an enucleated fertilized frog egg, and normal frogs were obtained. But in 1997 British scientists got success in cloning of sheep by transferring the nucleus from an udder cell of an adult sheep into the cytoplasm of a enucleated fertilized egg. Then the egg was transplanted into the uterus of a surrogate mother where it developed like a normal zygote into a normal lamb which has grown now into a normal adult sheep.

Udder cells from an adult sheep were primary cultured in vitro. The cultured cells were caught in the Go phase (quiescent stage) and then fused in vitro with enucleated ova of right stage. The fusion products were cultured in vitro before it transfers into the uteri of surrogate mothers. The chance  of success in obtaining normal embryo developed is rather low.
 In many situations, cloning is highly desirable since allows indefinite multiplication of an elite desirable without the risk of segregation and recombination during in meiosis, that must precede sexual reproduction. Clearly, the technique holds great promise in genetic research, mainly in understanding aging and curing genetic diseases. The technique need to be refined and expanded to other animals. However, in most of the countries, mainly in all developed countries, human cloning is prohibited.

Following the above report American scientist announced successful cloning of rhesus monkey using splitting technique; this is the closest species to humans where embryo splitting has been successful. 

Posted Date: 10/2/2012 1:01:22 AM | Location : United States

Related Discussions:- Animal cloning, Assignment Help, Ask Question on Animal cloning, Get Answer, Expert's Help, Animal cloning Discussions

Write discussion on Animal cloning
Your posts are moderated
Related Questions
Amino acid is any of a class of 20 molecules which are combined to form the proteins in living things. Consisting of the general formula NH2-CHR-COOH, where "R" is the side chain

This main protein component of connective tissue in mammals includes most of the organic matter of skin, bones, tendons, and teeth and occurs as fibrous inclusions in most other bo

MASTITIS The term mastitis refers to the inflammation of udder and is characterized by physical and chemical changes in the milk which include discolouration, presence of clots

Explain Non-Glycerides in Edible Oils? You may be aware of the fact that the glyceride fraction (an ester of glycerol and fatty acids that occurs naturally as fats and fatty oi

EXTINCTIO N  - It refers to disappearance of a species from earth when its last surviving member dies. Organic evolution not only creats new sps. but also eliminates some ol

Define on which severity of heat treatment for pasteurization depends? The severity of heat treatment for pasteurization depends on: 1.  Heat resistance of target microorgan

Metaphase This  is a period  of short duration, the  chromosomes are  at the  stage of their  maximum  condensation and , hence more  clearly  visible ,Upon  each  side  of the

What is the treatment of tuberculosis The disease can be very effectively treated with the help of antibiotic therapy, rest and nourishing food. The key to the treatment is ear

Why is the cytoplasm of sperm cells very reduced? Why do mitochondria of sperm cells concentrate in the base of the flagellum ? The decreased cytoplasm of sperm cells reduces th

Q. According to the stimuli they collect how are the sensory receptors classified? The sensory receptors are classified according to the stimuli they get: mechanoreceptors are