Animal cloning, Biology

Assignment Help:

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. 


Related Discussions:- Animal cloning

Can you explain about garden and green house, Q. Can you explain about Gard...

Q. Can you explain about Garden and Green House? Public parks and gardens are centres of aesthetic beauty and serve as places of recreation. Botanic Garden is a living resposit

Describe amoebae - paramecia and trichomonas, Q How do amoebae, paramecia a...

Q How do amoebae, paramecia and trichomonas respectively move? Amoebae move by amoeboid movements small invaginations and projections of their plasma membrane (pseudopods) that

Give the introduction to congenital heart disease, Give the introduction to...

Give the introduction to Congenital Heart Disease ? The past 3 or 4 decades have witnessed a revolution in pediatric cardiac sciences. A number of conditions previously conside

Chronic mitral regurgitation-indications for surgery, Chronic Mitral Regurg...

Chronic Mitral Regurgitation :  In chronic mitral regurgitation, the asymptomatic phase is much longer than in mitral stenosis. Onset of symptoms may also mean the onset of l

What are the major structures of the human eye, Q. What are the major struc...

Q. What are the major structures of the human eye? The major structures of the human eye are the iris, the cornea, the pupil, the ciliary muscles, the crystalline lens and the

Which kind of chemical bond maintains the pairing, Q. Which kind of chemica...

Q. Which kind of chemical bond maintains the pairing of each chain in the DNA molecule? To form the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds

Why do ribosomes move along mrna during translation, Q. Why do ribosomes mo...

Q. Why do ribosomes move along mRNA during translation? During translation the ribosome always exposes two mRNA codons to be translated by moving along the mRNA, when a peptide

Binary fission - types of asexual reproduction, Binary Fission - Types of A...

Binary Fission - Types of Asexual Reproduction Binary fission is a procedure in which an organism divides mitotically into two equal individuals which are generally identical

Osmoregulation in freshwater metazoans, Osmoregulation in Freshwater Metazo...

Osmoregulation in Freshwater Metazoans Freshwater and brackish water animals that are live in hypoosmotic(of lower osmotic pressure) environment and keep a hyperosmotic (of h

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd