Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides .
(b) Enhance nutritional value of food crops
(a) Reduce usage of chemical pesticides: Bt toxin is produced by a bacterium called Bacillus thuringiensis (Btfor short). Bt toxin gene has been cloned from the bacteria and been expressed in plants to provide resistance to insects without the need for insecticides; in effect created a bio-pesticide. Examples are Bt cotton, Bt com, rice, tomato, potato and soyabean etc.
(b) Enhance nutritional value of food crops: Golden rice is the transgenic variety of basmati rice which gives high yield and rich in vitamin A, so it is used in the deficiency of vitamin-A causing night blindness and skin disorder.
Many proteins are secreted in their inactive form. This is also hue of many toxic proteins produced by micro organisms. Explain how the mechanism is useful for the organism producing the toxin.
Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides .
(b) Enhance nutritional value of food crops
Gene expression can be controlled with the help of RNA. Explain the method with an example.
Gene therapy is an attempt to correct a genetic defect by providing a normal gene into the individual. By this’the normal function can be restored. An alternate method would be to provide the gene product (protein/enzyme) known as enzyme replacement therapy, which would also restore the function. Which in your opinion is a better option? Give reason for your answer.
Transgenic animals are the animals in which a foreign gene is expressed. Such animals can be used to study the fundamental biological process, phenomenon as well as for producing products useful for mankind. Give one example for each type.
What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.
Differentiate between diagnostics and therapeutics. Give one example and for each category.
Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides .
(b) Enhance nutritional value of food crops
Define transgenic animals. Explain in detail any four areas where they can be utilised.
Ignoring our traditional knowledge can we prove costly in the area of biological patenting. Justify.
Why is it that the line of treatment for a genetic disease is different from infectious diseases?
Why has the Indian Parliament cleared the second amendment of the country's patents bill?
Give the full form of ELISA. Which disease can be detected using it? Discuss the principle underlying the test.
Write a short note on biopiracy highlighting the exploitation of developing countries by the developed countries.
Consult internet andflnd out howto makeorally activ&protein pharmaceutical. What is the major problem to be encountered?
What are Cry proteins? Name an organism that produce it. How has man exploited this protein to his benefit?
Ignoring our traditional knowledge can we prove costly in the area of biological patenting. Justify.
What are the various advantages of using genetically modified plants to increase the overall yield of the crop?
Gene expression can be controlled with the help of RNA. Explain the method with an example.
Bt cotton is resistant to pest, such as lepidopteron, dipterans and coleopterans. Is Bt cotton also resistant to other pests as well?
How was Insulin obtained before the advent of rDNA technology? What were the problems encountered?
Name the five key tools for accomplishing the tasks of recombinant DNA technology. Also mention the functions of each tool.
Compare and contrast the advantages and disadvantages of production of genetically modified crops.
List the disadvantages of insulin obtained from the pancreas of slaughtered cows and pigs:
What is meant by the term bio-pesticide? Name and explain the mode of action of a popular bio-pesticide.
In view of the current food crisis, it is said, that we need another green revolution. Highlight the major limitations of the earlier green revolution.
While creating genetically modified organisms, genetic barriers are not respected. How can this be dangerous in the long run?
When a foreign DNA is introduced into an organism, how is it maintained in the host and how is it transferred to the progeny of the organism?
Give any two reasons why the patent on Basmati should not have gone to an American Company.
Digrammatically represent the experimental steps in cloning and expressing an human gene (say the gene for growth hormone) into a bacterium like E. coli ?
Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?
Who was the first patient who was given gene therapy? Why was the given treatment recurrent in nature?