Tag: biotechnology: general introduction
Questions Related to biotechnology: general introduction
Genetic engineering is
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Study of extra nuclear gene
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Manipulation of genes by artificial method
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Manipulation of RNA
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Manipulation of enzymes
Genetic engineering aims to add new DNA to an organism to add one or more new favorable traits that are not found in that organism. Genes are the DNA segments that carry the genetic information for the production of particular proteins/ enzymes. These enzymes/proteins determine the traits of an organism, thus alteration in gene structure is the key to impart new traits to the organisms. The genetic information present in genes is copied to the RNA and finally into the proteins; further genes are inherited from generation to generation. Hence, manipulation of RNA, protein or extranuclear gene will be confined to that generation only. Hence, genetic engineering is the manipulation of genes.
Nuclear transplantation technique was discovered by
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Briggs
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Wilmut
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Gurdon
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Griffith
Briggs and King discovered that normal hatched tadpoles can be obtained by transplanting the nucleus of a blastula cell to the enucleated eggs of Rana pipiens. This finding provided an initial answer to the long-standing question of whether the process of development and cell differentiation requires a loss or stable change in the genetic constitution of cells.
Who among the following scientists is associated with the discoveries in genetic engineering?
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Khorana
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Watson
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Crick
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Messelson
Har Govind Khorana synthesized artificial gene in a test tube in the year 1969.
Hirudin gene inserted in Brassica napus was
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Synthesised chemically
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Obtained from leech
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Got from Bacillus thuringiensis
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Brassica campestris
- Hirudin is a potent inhibitor of thrombin. Thus, it has a high therapeutic value in the treatment of thrombosis.
- Hirudin gene inserted in Brassica napus was synthesized chemically in E. coli and yeast and was found to be a reasonable success. Extended work suggested the production of this protein in a plant system, particularly oil-producing crop.
What is euphenics?
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Improvement of human race by better environment
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Improvement of human race by genetic engineering
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Treatment of communicable diseases
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Treatment of inheritable diseases
The therapeutic techniques used to treat deleterious phenotypic effects of a genetic defect especially without altering the genetic makeup of the germplasm of the individual is known as Euphenics. Therefore it is the improvement of phenotypic effect in humans after their birth by genetic engineering. Hence option B is correct.
Who made discovery for genetic engineering ?
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Morgan
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Watson
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Crick
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Khorana
A desirable change in genotype of an organism is obtained by
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DNA replication
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Protein synthesisr
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DNA technology
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mRNA formation
Genetic engineering is possible because
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We can cut DNA at specific sites by restriction endonucleases
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Restriction endonucleases purified from virus can be used in bacteria
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The phenomenon of transduction in bacteria is well understood
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We can see DNA by electron microscope
Who is the father of genetic engineering?
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Steward Linn
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Stanley Cohen
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Paul Berg
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Kary Mullis
Genetic engineering has been successfully used for producing
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Transgenic mice for testing safety of polio vaccine before use in humans
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Transgenic cow-Rosie which produces high fat milk for making ghee
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Animals like bulls for farm work as they have super power
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All of the above
Transgenic mice are being formed for use in testing the safety of before
they are used they are used on human beings. They are being used to
test the safety of the polio vaccine. The first transgenic cow. Rosie
produced human protein enriched milk (2.4 gms per litre). The milk
contained the human alphalactalbumin. It is a more balanced product for
human babies than natural cow-milk. Bulls with more power are produced
by animal breeding not by genetic engineering. So, the correct answer is 'Transgenic mice for testing safety of polio vaccine before use in humans'.