List of top Life Science Questions on Chromatin Structure and Function

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The amino acid sequences of Histones H3 and H4 are not highly conserved.
Reason R: Nearly all of the amino acids in a histone molecule are engaged in an interaction with either D or another histone.

Barr body is an example of:

Repeated sequence TTAGGG AATCCC in humans is present at:

In humans, one of the most recognized satellite DNA sequences, found mainly in the centromere region is:

Select correct statement about Euchromatin :

Match List I with List II:

List I	List II
(A) Histone erasers	(III) Deacetylases
(B) Histone readers	(IV) Bromodomain proteins
(C) Histone writers	(I) Methyltransferase
(D) DNA unwinding	(II) Topoisomerase

Choose the correct answer from the options given below:

Nucleosome is basically composed of:
(A) Histone core
(B) Linker histone
(C) Core DNA
(D) Linker DNA
Choose the correct answer from the options given below:

With the addition of linking number (Lk) by +2 to a relaxed DNA consisting of Lk = 200, which of the following occurs?

What are the functions of topoisomerases?

What is the function of DNA gyrase in circular DNA?

The histone that links two histone octamers is: