Q. 123.7( 3 Votes )
What is a clone? In what way is the cloning technique useful in the field of veterinary science?
It is a group of individual of same species(morphologically and genetically similar)
It is defined as the exact copies of the single genetical parent.
Clones are of two types—
i. Natural clone
ii. Induced clone
The cloning technique useful in the field of veterinary science as valuable animals can be cloned from desirable adult cells.
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The first clinical gene therapy was given in 1990 to a four-year-old girl suffering from Adenosine Deaminase Deficiency (ADA). Could you suggest a possible cure for such a disorder with the knowledge of gene therapy and its types?Tamil Nadu Board - Science
What is a clone? In what way is the cloning technique useful in the field of veterinary science?Tamil Nadu Board - Science
In Dr. Ian Wilmut’s cloning experiment, did the new born 'Dolly' resemble the udder cell donor Dorset white sheep or the surrogate mother sheep? Give reasons.Tamil Nadu Board - Science
What are monoclonal antibodies? Mention its use.Tamil Nadu Board - Science
The following are the events in the formation of the first cloned animal – the sheep Dolly.
a) Removal of haploid nucleus from the ovum.
b) Implantation of ovum with diploid nucleus into the surrogate mother.
c) Collection of udder cell from the sheep.
d) Injection of diploid nucleus of udder cell into the enucleated ovum.
e) Development of a young clone.
The correct sequential order of these events is __________ .Tamil Nadu Board - Science
For the experimental research, Dr. Ian Wilmut used the nucleus of the udder cell from a six-year-old Finn Dorset white sheep and preserved the diploid nucleus (2n). He took an ovum from the ovary of another sheep. The haploid ovum was removed. The diploid nucleus of the udder cell was injected into the cytoplasm of the enucleated ovum. Then the diploid nucleus ovum was implanted into the uterus of the surrogate mother sheep. The diploid ovum developed into a young one, named “Dolly”.
i) Why did Wilmut select the udder cell?
ii) Define the terms haploid and diploid.Tamil Nadu Board - Science
Biotechnology, the modern science in biology, has helped in producing different types of products. One of the following groups does not have a product of biotechnology.
Pick out and give reasons.
i) enzymes, organic acids, steroids, vaccines
ii) vaccines, enzymes, antibiotics, inorganic acids
iii) antibiotics, hormones, steroids, vaccines
iv) steroids, enzymes, antibodies, vaccinesTamil Nadu Board - Science