Q. During transcription holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle like structure at that point. What is that sequence called?
A) AAAT box
B) TATA box
C) GGTT box
D) CAAT box
Explanation
After 25 bases from start of transcription point are TATA boxes. After 40 bases from TATA boxes appears CAAT boxes. Both of these sequences serve as recognition sites in eukaryotic promoters. Transcription in eukaryotic genes is a far more complicated process than in prokaryotes.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.