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Compare and contrast the advantages and disadvantages of the production of genetically modified crops. - Biology

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प्रश्न

Compare and contrast the advantages and disadvantages of the production of genetically modified crops.

अंतर स्पष्ट करें
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उत्तर १

Sr. No. Advantages Disadvantages
1. Genetically modified (GM) crops have shown a significant increase in crop yield and productivity. There could potentially be a reduction in the genetic diversity of crops.
2. GM crops show resistance to pests and diseases, reducing the need for chemical pesticides. They could potentially harm non-target organisms such as beneficial insects.
3. GM crops can tolerate abiotic stresses such as drought and salinity. Altered gene expression in GM crops may lead to unforeseen negative effects.
4. GM crops like Golden Rice, enriched with Vitamin A, offer enhanced nutritional value. There are potential health risks such as allergenicity or toxicity in genetically modified food.
5. The use of GM crops reduces agrochemical usage, thus lowering environmental pollution. Farmers’ dependence on biotech companies for GM seeds raises socio-economic and ethical concerns.
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उत्तर २

Sr. No. Feature Advantages Disadvantages
1. Agricultural productivity Enhances crop yields, helping to address food shortages and increasing farmers' income. It can create a cycle of dependency for farmers, who must purchase patented seeds annually at high costs.
2. Environmental impact Reduces the use of chemical pesticides on insect-resistant crops. Can promote more sustainable farming practices like no-till agriculture. Increases the risk of creating herbicide-resistant "superweeds" and negatively impacts biodiversity.
3. Human health Improves nutritional content through biofortification (e.g., Golden Rice). Reduces human exposure to pesticides. Raises concerns about potential allergens, the creation of new toxins, and antibiotic resistance.
4. Economic and social factors Can lower food prices and provide economic benefits to farmers. Concentrates power within a few multinational corporations, which can threaten local agricultural diversity.
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अध्याय 14: Biotechnology and Its Applications - NCERT EXERCISES WITH ANSWERS [पृष्ठ ५५६]

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नूतन Biology [English] Class 12 ISC
अध्याय 14 Biotechnology and Its Applications
NCERT EXERCISES WITH ANSWERS | Q 3. | पृष्ठ ५५६

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संबंधित प्रश्न

Write the function of adenosine deaminase enzyme.


Expand the Given and mention one application of each:

PCR


Diagrammatically 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 the chemistry of oil?


State the cause of ADA deficiency in humans.Mention a possible cure for an ADA deficiency patient.


What is gene therapy? Name the first clinical case in which it was used.

 

 

Why does Bt toxin not kill the bacterium that produces it, but kill the insect that ingests it?

 


The genetic defect adenosine deaminase deficiency may be cured permanently by ____________.


ELISA is mainly used for ____________.


How was Insulin obtained before the advent of rDNA technology? What were the problems encountered?


What are DNA vaccines?


PCR is a useful tool for early diagnosis of an Infectious disease. Elaborate.


The hormone insulin is secreted by:


A probe which is a molecule used to locale-specific sequences in a mixture of DNA or RNA Mole cubs could be ______.


The site of production of ADA the body is ______.


Choose the correct option regarding retrovirus.


Which of the following is the correct sequence of steps in a PCR (Polymerase Chain Reaction)?


With regard to insulin choose the correct options.

  1. C-peptide is not present in mature insulin.
  2. The insulin produced by rDNA technology has C-peptide.
  3. The pro-insulin has C-peptide.
  4. A-peptide and B-peptide of insulin are interconnected by disulphide bridges.

Choose the correct answer from the options given below.


The Adenosine deaminase deficiency results in ______.


Why is it that the line of treatment for a genetic disease is different from infectious diseases?


Taking examples under each category, discuss upstream and downstream processing.


A host cell must be made competent, before it is able to receive an rDNA. Justify.


Explain how recombinant human insulin was prepared in 1983 by Eli Lily an American company.


The graph given below indicates the administration of the first (L) and second dose (M) of a vaccine. The corresponding response of the body is indicated by X, and Y. Interpret the graph and explain the reason for such a response shown by the body.


The diagram given below represents the schematic structure of proinsulin, which undergoes certain modifications before it becomes a fully functional insulin.

Study the diagram carefully and answer the questions that follow:

  1. State the change the proinsulin undergoes to become fully functional.
  2. Name the modern scientific technique used for the production of human insulin.
  3. How are the two polypeptide chains of the fully functional insulin held together?

How many cycles of PCR are required to produce 250 molecules of DNA, starting with a single parental strand?


Name the technique used to detect the presence of HIV in the body of an individual, Justify the principle associated with this technique.


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