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Engineering Life: Miracles in Biotechnology - Ethical Issues in Biotechnology-advanced

Grade 9CBSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

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Bioethics is the branch of ethics that studies the philosophical, social, and legal issues arising from biotechnology and medicine.

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Genetically Modified Organisms (GMOs): While they offer high yields, ethical concerns include the 'unnatural' mixing of genes across species boundaries and potential health risks like allergies.

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Biopiracy: The practice of commercially exploiting naturally occurring biochemical or genetic material, especially by obtaining patents that restrict its future use, while failing to pay fair compensation to the community from which it originates.

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Environmental Impact: The risk of 'Gene Flow' where transgenes from GMOs escape into wild relatives (Transgene→Wild_SpeciesTransgene \rightarrow Wild\_Species), potentially creating 'Superweeds' that are resistant to all herbicides.

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Somatic vs. Germline Editing: Somatic editing affects only the patient, while Germline Editing alters the DNA of embryos or reproductive cells (Sperm/EggSperm/Egg), meaning changes are passed to all future generations, leading to the 'Designer Baby' debate.

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Regulatory Bodies: In India, the GEAC (Genetic Engineering Appraisal Committee) is responsible for assessing the safety of genetically engineered products and their introduction into the environment.

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Animal Rights: Biotechnology often involves using animals as 'bioreactors' to produce human proteins, raising concerns about the suffering and the 'instrumentalization' of living beings.

📐Formulae

DNArecombinant=DNAvector+DNAtarget_geneDNA_{recombinant} = DNA_{vector} + DNA_{target\_gene}

Efficiency of Transformation(η)=Number of Transformed CellsTotal Number of Cells×100%\text{Efficiency of Transformation} (\eta) = \frac{\text{Number of Transformed Cells}}{\text{Total Number of Cells}} \times 100\%

p2+2pq+q2=1 (Hardy-Weinberg Principle for monitoring gene frequency changes)p^2 + 2pq + q^2 = 1 \text{ (Hardy-Weinberg Principle for monitoring gene frequency changes)}

ΔG=Genetic Gain per generation\Delta G = \text{Genetic Gain per generation}

💡Examples

Problem 1:

In 1997, an American company got patent rights on Basmati rice through the US Patent and Trademark Office. Explain why this is considered an ethical issue of Biopiracy.

Solution:

Basmati rice is a traditional variety indigenous to India and South Asia. By patenting it, the company claimed ownership over a biological resource developed by Indian farmers over centuries. This prevented Indian farmers from selling 'Basmati' in certain international markets, which is an ethical violation of indigenous intellectual property.

Explanation:

Biopiracy ignores the contribution of local communities to biodiversity and traditional knowledge.

Problem 2:

A scientist wants to calculate the percentage of successful gene uptake in a petri dish. If 8080 colonies grow on a selective medium out of an initial 400400 treated cells, calculate the efficiency.

Solution:

Efficiency=80400×100Efficiency=15×100Efficiency=20%\begin{array}{r} \text{Efficiency} = \frac{80}{400} \times 100 \\ \text{Efficiency} = \frac{1}{5} \times 100 \\ \text{Efficiency} = 20\% \end{array}

Explanation:

The efficiency η\eta is the ratio of transformed cells to the total population, expressed as a percentage.

Problem 3:

Why is 'Germline Gene Therapy' considered more ethically sensitive than 'Somatic Gene Therapy'?

Solution:

  1. Somatic Therapy: Only affects the individual being treated (e.g., treating lung cells in a patient with Cystic Fibrosis).
  2. Germline Therapy: Changes the DNA in eggegg or spermsperm cells. This change is permanent and will be inherited by all subsequent offspring (F1,F2,…,FnF_1, F_2, \dots, F_n). It poses risks of unpredictable long-term effects on the human gene pool.

Explanation:

Ethical concerns involve the lack of consent from future generations who will inherit the modified genes.

Ethical Issues in Biotechnology-advanced Class 9 Notes & Examples