Question

Describe general/specific transcription factors, their roles in eukaryotic transcription initiation, DNA-binding motifs and cis-regulatory elements.

29 Jan 2026
Answer :
Word Count : 516
Transcription in eukaryotes is a highly regulated process involving multiple proteins that ensure precise initiation of gene expression. Central to this process are transcription factors, which can be broadly categorized into general (or basal) transcription factors and specific transcription factors. General transcription factors (GTFs) are essential for the transcription of all protein-coding genes by RNA polymerase II. They assemble at the core promoter region to form the pre-initiation complex (PIC), providing a platform for RNA polymerase II binding and accurate transcription initiation. Key general transcription factors include TFIID, which contains the TATA-binding protein (TBP) that recognizes the TATA box within the core promoter, TFIIA, TFIIB, TFIIE, TFIIF, and TFIIH. TFIIH possesses helicase activity to unwind DNA and kinase activity to phosphorylate the C-terminal domain of RNA polymerase II, allowing promoter clearance and transition into
______ _______ _______ _____ _____ ______ _______.
______ ________ _____ _______ _________ ___.
__________ ____ ___ ________ _________ ____ _______ ______ _____ ______ _________.
_____ _______ _______ _______ ________ _______ _______.
___ ____ __________ _____ ________ ____ ___ ___.
__________ _____ ________ _____ _____ ___ _____ ________ ______ ________.
_______ ______ _____ _____ ___ _______ ______ ______ __________ __________ __________.
__________ _____ _____ ___ _____ _____.
_________ ____ _____ ____ _____ _____ _______ ___ ______ _____ _____ _________.
___ ________ _______ __________ __________ ______ ________ ________ _____ _______ _____ ______.
____ ______ __________ __________ _______.
_________ ____ __________ _____ _________ ________ ____ ___.
____ ___ __________ ___ _________.
_________ __________ _______ _____ _________ _________ ________ ____.
__________ _______ ________ _________ ______ _______ ____ _______ _______ ________.
__________ _______ ___ ______ ______ _____ ____ ___.
_______ _________ ___ ___ _________ _____ _________.
______ _____ ________ _______ _______.
__________ ________ _____ ________ ____ ______ ___ ___ ___ _______ __________ ___.
______ ____ ______ __________ ____ _____ _________ ________ ___ ___ _______.
________ _______ _______ ___ __________.
_______ ___ _________ __________ ______ ________ _________ _____ _____ ________ _____ ______.
_________ ____ ______ ______ ________ ________ ___ ___ __________.
________ ___ __________ _____ _____ _______.
________ ______ ____ _________ _____ ______ ________ _____ ______ _________.
____ _________ ____ ________ ______ ____ _______ __________ _________ ______ _______.
_______ ________ ______ ____ _______ ___ __________ ________ ___.
_____ __________ ________ __________ __________ ______ ________ ______ _____ ___.
________ ______ ______ _______ ________ ___ __________ ________.
___ _______ _________ _________ ________ ____ ___ ________ _________.
___ ______ _____ _________ ________.
___ ______ ____ ____ _________.
_____ ____ _____ ____ __________ ___ _____.
________ ____ ______ _______ ___ ____ ___ _______ _________.
________ __________ __________ _______ ______ _________ ______ _____ ______ _____ __________ __________.
_________ ______ ________ _____ ___ _____ _____ _______ __________ ________ _____.
______ _________ _________ _______ _______ _______ __________ ____ _________ ___ _______ _____.
____ _______ __________ ____ ______ ________ __________.
______ ___ _____ __________ ________ _____ __________.
_______ _______ _______ _____ __________ _______ _______ ________ _____ ________ ________ _______.
______ ___ ___ ______ ______ ______ _________ _________ _____ _____.
___ ______ _____ ______ ___ _________ ________ _____ _______.
_________ _________ _________ _________ ___ _____.
__________ ______ ________ ____ ______ __________ ________ _____ __________.
___ __________ __________.
IGNOU ACADEMY
Your IGNOU journey, made easier.
  • Solved Assignments
  • Study Notes
  • Guess Papers
  • Question Papers
Call Us WhatsApp
STUDY • PREPARE • SUCCEED
Skip in 10
Related Questions

Explain human gene mapping by linkage analysis in pedigrees using nail-patella syndrome and ABO blood group example, including recombination frequency calculation.

 

Compare spontaneous vs. induced mutations, explaining DNA replication errors, tautomeric shifts, depurination, UV-induced thymine dimers, and 5BU base analog effects.

Explain Drosophila sex determination by Genic Balance Theory (X/A ratio), Calvin Bridges' experiments, and molecular pathway involving sxl, tra, tra-2, and dsx genes.

Explain artificial selection using narrow-sense heritability, selection differential/response to selection, QTL mapping, and heritability estimates for human intelligence/personality traits.

Describe the phenomenon of duplicate genes with cumulative effect with suitable examples. How does this type of gene interaction modify the expected Mendelian ratio, and what phenotypic ratio is observed in the F₂ generation of such crosses?

Compare non-viral vs. viral vectors in gene therapy, their advantages/disadvantages, and applications in treating cystic fibrosis, hemophilia, cancer, and dermatological disorders.

Explain positive and negative control mechanisms in prokaryotic gene expression, distinguishing inducible/repressible systems with diagrams of activator/repressor binding to RPBS and effector molecule effects.

IGNOU Solved Assignments Assignments Ignou Projects Project Previous Year Solved Exam Papers Notes Notes Sample Question Papers Sample Question Papers
Login
Top
📞
Call Support Instant phone assistance IGNOU MZO 002 2026 - Describe general/specific transcription factors, their roles in eukary | IGNOU Academy
→
🟢
WhatsApp Chat Fast live messaging
→
Email Us Business enquiries & support
→