Bacillus thuringiensis forms protein crystals which contain insecticidal protein.
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(a) binds with epithelial cells of midgut of the insect pest ultimately killing it (b) is coded by several genes including the gene […]
RNA interference involves
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(a) Synthesis of mRNA from DNA (b) Synthesis of cDNA from RNA using reverse transcriptase (c) Silencing of specific mRNA due to complementary RNA (d) Interference of RNA in […]
What is true about Bt toxin?
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(a) Bt protein exists as active toxin in the Bacillus (b) The activated toxin enters the ovaries of the pest to sterilise it and thus prevent […]
Transgenic plants are the ones:
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(a) generated by introducing foreign DNA into a cell and regenerating a plant from that cell (b) produced after protoplast fusion in artificial medium (c) grown in […]
Some of the characteristics of Bt cotton are:
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(a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic […]
Genetic engineering has been successfully used for producing:
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(a) transgenic mice for testing safety of polio vaccine before use in humans (b) transgenic models for studying new treatments for certain cardiac diseases […]
Consider the following statements (A-D) about organic farming: (A)Utilizes genetically modified crops like Bt cotton (B)Uses only naturally produced inputs like compost (C)Does not use pesticides and urea (D)Produces vegetables rich in vitamins and minerals. […]
During the process of isolation of DNA, chilled ethanol is added to
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(a) Remove proteins such as histones (b) Precipitate DNA (c) Break open the cell to release DNA (d) Facilitate action […]
Read the following four statements (A-D) about certain mistakes in two of them (A)The first transgenic buffalo, Rosie produced milk which was human alpha-lactal albumin enriched. (B)Restriction enzymes are used in isolation of DNA from […]
Main objective of production/use of herbicide resistant GM crops is to
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(a) eliminate weeds from the field without the use of manual labour (b) eliminate weeds from the field without the use […]
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