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  • PYQs (GS & Optional)
  • (f) Gene regulation and expression in prokaryotes and eukaryotes.

    • Gene regulation and Expression in Prokaryotes and Eukaryotes
      • How does the regulation of gene expression occur in eukaryotes?
      • Discuss gene regulation mechanisms in E. coli.
      • How is the RNA (primary transcript) modified into functional mRNA in eukaryotes? Explain.
      • Illustrate the mechanism of initiation of DNA replication and formation of primosome in prokaryotes.
      • Describe the constitution of a basic transcription unit and the process of initiation of transcription in prokaryotes.
      • How does lactose induce lac operon? Explain.
      • Describe the requirement of proteins for the initiation of transcription in a eukaryote.
      • Explain molecular mechanism of chromosome movements in eukaryotes.
      • Discuss the regulation of gene function in prokaryotes.
      • What are Transposons? Explain the general structure and mechanism of transposition of Tn3 elements in prokaryotes.
      • What is transcription? Explain the process of transcription in a eukaryote.
      • Explain the role of transcription factors of RNA polymerase II in eukaryotes.
      • Describe the steps involved in gene regulation in eukaryotes.
      • Bring out the differences between prokaryotic and eukaryotic gene organisation.
      • Define operon. Give the similarities and differences between tryptophan and arabinose operon, with a focus on attenuation.
      • Define operon. Give the similarities and differences between tryptophan and arabinose operon, with a focus on attenuation.
      • Give an illustrated account of Lac Operon in E. coli.
      • Which eukaryotes do not contain repetitive DNA? Give a brief account of biological macromolecules found in all living organisms.
      • How does the protein synthetic machinery operate in a prokaryote? Mention the various functions of protein in eukaryotes and prokaryotes.
      • Compare the manner in which genes are expressed in prokaryotes and eukaryotes.
      • Explain the structure of the basic level of organization of eukaryotic genetic material. Name two higher levels of organization.
      • Explain the differences in gene regulation and its expression in eukaryotes.
      • Tryptophan Operon.
      • Describe transcription in pro and eukaryotes.
      • Describe gene expression in prokaryotes and eukaryotes. Define transcription.
  1. PYQs and Practice Questions
  2. UPSC Optionals
  3. Zoology Optional
  4. Genetics
  5. (f) Gene regulation and expression in prokaryotes and eukaryotes.
  6. Gene regulation and Expression in Prokaryotes and Eukaryotes

Give an illustrated account of Lac Operon in E. coli. (UPSC 2014, 10 Marks, )

  1. Posted by: Synopsis IAS
  2. Posted on:31 July 2025
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ई. कोलाई में लैक्स ऑपेरॉन का चित्र सहित विवरण दें। (Give an illustrated account of Lac Operon in E. coli.)
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