Recent questions in Biology

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Which one of the following is most suitable medium for culture of Drosophila melanogaster?

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Natural genetic engineer is

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Bt gene which produces protein toxic to insect larvae is

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Gene targeting is commonly called

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Electroporation is used for

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In order to obtain virus free plants through tissue culture, the best method is

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The first restriction endonuclease was isolated by

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To which of the following techniques, DNA probes can be hybridized with RNA fragments.

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Microbes found to be very useful in genetic engineering are

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Assertion: Transgenic plant production is an application of plant tissue culture <br> Reason: an organism that contains and expresses a transgene is called transgenic organism.

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Assertion: In recombinant DNA technology, human genes are often transferred into bacteria or yeast <br> Reason: Both bacteria and yeast multiply very fast to form huge population , which expresses the desired gene.

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Assertion: In Plant tissue culture, somatic embryos can be induced from any plant cell. Reason: Any viable plant cell can differentiate into somatic embryos.

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Assertion: Nitrogen fixing enzyme in legume root nodules functions at low oxygen concentration <br> Reason: Low oxygen concentration

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Assertion: Flavr savr a transgenic tomato remains fresh and retains its flavor for long time. <br> Reason: Production of polygalacturonase enzymes which degrades pectin was blocked in Flavr savr

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The technique used for detecting specific target DNA is called

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Hybridomas are the fusion product of

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Which of the following enzymes is used to remove protein stains from the clothes?

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Small proteins produced by vertebrate cells, naturally in response to viral infections and those inhibit multiplication of viruses are called

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Monoclonal antibodies are used in

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To identify an individual by DNA analysis of their blood, investigators look for

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Human insulin is being commercially produced from transgenic species of

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Production of a human protein in bacteria by genetic engineering is possible because

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The second step in most of the genetic engineering experiments is

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Producing a ‘Giant mouse’ in the laboratory was possible through

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Which of the following is used as microbial insecticide?

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Vaccines produced by recombinant DNA technology are known as

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Which of the following can be controlled by using biopesticides?

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In a polymerase chain reaction, a synthetic sequence of nucleotides are involved in

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Insect resistance transgenic cotton has been produced by inserting a piece of DNA from

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Identify the plasmid

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Improvement of genotype of an organism by addition of some foreign gene is

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Reverse transcription is also known as

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Retro viruses have the genetic material

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Bam HI, ECoRI, SalI are the types of

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Vectorless gene transfer includes

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The sticky ends of fragmented DNA molecules are made up of

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Which of the following is a genetic vector?

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Ability of a plant or an animal cell to repeatedly divide and differentiate into a complete organism is

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DNA can be introduced into any cell by

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A technique used for making numerous copies of specific segment of DNA quickly and accurately

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Who won the Nobel prize for Plomerase Chain Reaction or PCR?

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The first hormone artificially produced by culturing bacteria is

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Which of the following is a palindrome?

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Restriction endonucleases are utilized in genetic engineering techniques as

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Which of the following pairs is correctly matched?

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Who discovered enzyme restriction endonuclease?

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Restriction enzymes are isolated chiefly from

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The first step in genetic engineering is

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Which one of the following bacteria has found extensive use in genetic engineering work in plants?

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