TRANSGENIC PLANT QUIZ

Given the DNA sequence ATTAAGGC, which sequence would be used by researchers as an antisense molecule?

CGGAATTA

UAAUUCCG

AUUAAGGC

TAATTCCG

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YOUR ANSWER : ?

In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that

these provide no protection at all against pathogens

expression of one PR protein provides high levels of protection against many pathogens

expression of two PR proteins provides some protection against a few pathogens

these proteins trigger the production of other antimicrobial defenses

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Cross protection against viruses in transgenic plants can be obtained by

inoculating the susceptible strain with the coat proteins of virulent strain

inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain

any of the above

inoculating the susceptible strain with genes of nucleocapsid

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Nitrilase is encoded by

none of these

bar gene in Streptomyces spp

gene bxn in Klebsiella pneumoniae

both (a) and (b)

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If the goal were to create a plant resistant to an insecticide, which cell-based plant technology would be most effective?

Clonal propagation

Cybridization

Mutant selection

Protoplast fusion

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Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by

cooling plants using the Peltier effect

expressing a gene for production of antifreeze (ethylene glycol) in plants

expressing the protein that activates expression of these genes all the time in plants

increasing evaporative cooling from leaf surfaces

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Starch content of potatoes can be increased by using a bacterial gene, known as

None of these

ADP glucose pyrophosphorylase gene

polygalactouranase gene

sucrose phosphate synthase gene

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A naturally occurring variant, possessing characteristics of interest, is identified. This plant is selectively bred. This is an example of

none of these

mutant selection

transgenic technology

traditional plant breeding

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In a __________ protocol, bacteria with engineered abilities to detoxify pollutants are intentionally released in an area.

rhizosecretion

microcosm establishment

mibridization

bioremediation

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Tomatoes exhibiting delayed ripening express antisense RNA against

polygalactouranase

sucrose phosphate synthase gene

glycerol 1 phosphate acyl transferase

ACC deaminase

TRUE ANSWER : ?
YOUR ANSWER : ?