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Assertion: Transgenic crops are avoided ...

Assertion: Transgenic crops are avoided growing in areas where
their wild relative or weeds occurs in fields or surrounding areas
Reason :Transgene may be transferred through pollen form these crops to their wild relatives. Such a gene transfer may make the
weed more prominent and damaging

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion

B

It both Assertion & Reason are True but Reason is not a correct explanation of the Assetion

C

If Assertion is True but the Reason is False

D

If both Assertion & Reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
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What could be the possible harm of using antibiotic resistant gene as a selectable marker in plasmid, used for gene transfer in production of GM food? (A) GM food contains the enzyme produced by the antibiotic resistance gene that was used during gene tranfer in genetic engineering. This could cause allergies since it is a foreign protein. (B) The bacteria present in the alimentary canal of the humans could take up the antibiotic resistance gene present in GM food. (C) The bacteria in the human alimentary canal would then become resistant to the concerned antibiotic. (D) The transgene may be transferred through pollen to their wild relatives and make weeds more persistant and damaging.

The word fluid means a substance having particles which readily of its magnitude (a small shear stress, which may appear to be of negligible will cause deformation in the fluid). Fluids are charactrised by such properties as density. Specific weight, specific gravity, viscosity etc. Density of a substance is defined as mass per unit volume and it is denoted by. The specific gravity represents a numerical ratio of two densities, and water is commonly taken as a reference substance. Specific gravity of a substance in written as the ratio of density of substance to the density of water. Specific weight represents the force exerted by gravity on a unit volume of fluid. It is related to the density as the product of density of a fluid and acceleration due to gravity. Viscosity is the most important and is recognized as the only single property which influences the fluid motion to a great extent. The viscosity is the property by virtue of which a fluid offers resistance to deformation under the influenece if shear force. The force between the layers opposing relative motion between them are known as forces of viscosity. When a boat moves slowly on the river remains at rest. Velocities of different layers are different. Let v be the velocity of the level at a distance y from the bed and V+dv be the velocity at a distance y+dy . The velocity differs by dv in going through a distance by perpendicular to it. The quantity (dv)/(dy) is called velocity gradient. The force of viscosity between two layers of a fluid is proportional to velocity gradient and Area of the layer. F prop A & F prop (dv)/(dy) F= -etaA(dv)/(dy) ( -ve sign shown the force is frictional in nature and opposes relative motion. eta coefficient of dynamic viscosity Shear stress (F)/(A)= -eta(dv)/(dy) and simultaneously kinematic viscosity is defined as the dynamic viscosity divided by the density. If is denoted as v . The viscosity of a fluid depends upon its intermolecular structure. In gases, the molecules are widely spaced resulting in a negligible intermolecular cohesion, while in liquids the molecules being very close to each other, the cohesion is much larger with the increases of temperature, the cohesive force decreases rapidly resulting in the decreases of viscosity. In case of gases, the viscosity is mainly due to transfer of molecular momentum in the transerve direction brought about by the molecular agitation. Molecular agitation increases with rise in temperature. Thus we conclude that viscosity of a fluid may thus be considered to be composed of two parts, first due to intermolecuar cohesion and second due to transfer of molecular momentum. If the velocity profile is given by v=(2)/(3)y-y^(2)v is velocity in m//sec y is in meter above the bad. Determine shear stress at y=0.15m , & eta=0.863 Ns//m^(2)

ALLEN-BIOTECHNOLOGY AND MICROBES IN HUMAN WELFARE-Exercise IV
  1. Assertion: In gene therapy of SCID, a patient requires periodic infusi...

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  2. Assertion: For effective treatement of a disease, early dignosis & und...

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  3. Assertion: ELISA is based on the principle of antigen antibody interac...

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  4. Assertion: PCR is a powerful technique to identify many genetic disord...

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  5. Assertion: A ds DNA, tagged with a radioactive molecule (probe) is use...

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  6. Assertion: Transgenic animals are those animals whose DNA is mainpulat...

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  7. How are the transgenic animals advantageous to us?

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  8. Assertion: The milk of 1^(st) transgenic cow, 'Rosie' is far better th...

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  9. Which of the following transgenic animals are being used to test the s...

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  10. Assertion: Transgenic animals are now used in toxicity testing of vari...

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  11. The use of bio-resources by multinational companies & other organisati...

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  12. Assertion: Bacillus thuringiensis is not killed by its own toxin Rea...

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  13. Assertion: The protein encoded by cry I Ab is not effective in control...

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  14. Assertion: GEAC will make decision regarding the validity of GM resear...

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  15. Assertion: Transgenic mice are beging developed for use in testing the...

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  16. Assertion: Bt -toxines kills the Bacillus thuringiensis Reason :Bt-t...

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  17. Assertion: Transgenic crops are avoided growing in areas where their ...

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  18. Read the given statements and select the correct option Statement 1 ...

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  19. Assertion: Genetic engineering is helpful in development of high yield...

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  20. Assertion : GM foods are facing widespread resistance by the people. ...

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