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Genetics and Society

Telangana Open School (TOSS) · Class 12 · Biology

Quick revision notes for Genetics and Society — Telangana Open School (TOSS) Class 12 Biology. Key concepts, formulas, and definitions for last-minute revision.

49 questions25 flashcards5 concepts

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Key Topics to Revise

1

Gene Cloning and Gene Bank

  • Gene cloning is the process of producing multiple identical copies of a specific gene.
  • It uses recombinant DNA technology to insert a desired gene into a bacterial plasmid.
  • The bacteria multiply, creating a clone of cells carrying the same gene.
2

Recombinant DNA Technology

  • Also known as genetic engineering, it combines DNA from two different sources.
  • Restriction enzymes cut DNA at specific sequences; plasmids act as vectors.
  • Steps: Isolate gene → cut with restriction enzyme → insert into plasmid → transfer to bacteria → allow cloning.
3

Transgenic Organisms

  • Transgenic organisms have foreign genes inserted into their genome using genetic engineering.
  • Also called genetically modified (GM) organisms.
  • Examples: Bt cotton (pest-resistant), transgenic goats producing clotting protein in milk.
4

Polymerase Chain Reaction (PCR)

  • PCR is used to make millions of copies of a small DNA sample.
  • Uses DNA polymerase enzyme, especially Taq polymerase from heat-loving bacteria.
  • Steps: Denaturation (heating to separate strands), Annealing (cooling to attach primers), Extension (building new strands).

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Full Notes

Key Concepts

Gene cloning is the processA gene bank is a collectionThis technique involves cutting DNA fromThese are organisms that carry foreignPCR is a technique used

Frequently Asked Questions

What are the important topics in Genetics and Society for Telangana Open School (TOSS) Class 12 Biology?
Genetics and Society covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Genetics and Society — Telangana Open School (TOSS) Class 12 Biology?
Understand the core concepts first, then work through the 49 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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