Teaching JKPSC Lecturership Mock Test Series 2024-25 Life Sciences Fundamental Processes DNA replication, repair and recombination
The following statements were made about the structure of the 30-nm chromatin fiber:
A. In the solenoid model, the linker DNA connects the consecutive core particles.
B. In the zig-zag model, alternating nucleosomes become interacting neighbors.
C. In the solenoid model, 12 nucleosomes are organized into two separate stacks, whereas 8 nucleosomes per turn make a single stack in the zig-zag model.
D. H1 histone is essentially required as per the zig-zag model, but not as per the solenoid model.
E. Chromatin fibers prepared with H4 histones that lack their tails could fold into higher-order fibers.
Which one of the following options represents the combination of all correct statements?
1
A, C and D
2
A, B and E
3
A and B only
4
C and E only