Chromatin contain DNA, some acidic protein called histone and some non histone protein

Read the following four statements (i -iv) (i) Every chromosome essentially has a primary constriction or the centromere. (ii) During different stages of cell division, cells show structured chromosomes in place of the nucleus . (iii) Nuclear pores are the passages through which movement of RNA and Protein takes place in one direction between the nucleus and cytoplasm. (iv) Chromatin contains DNA, some basic proteins called histone adn RNA only . How many of the above statement are correct

Histone proteins are

Nature of histone protein is :-

Assertion : DNA is associated with proteins. Reason : DNA binds around histone proteins that form a pool and the entire structure is called a nucleosome.

Amino acid present in histones are

Histone is a basic protein due to

Which of the following statement is true for the packaging of DNA in eukayotes? A. DNA is packaged with a set of basic protein called histone. B. Histone contain negatively charged amino acid in its side chain. C. DNA packed with histone octamer are called nuclesome. D. Nuclesome is further packed to form chromatin fibre.

DNA is associated with basic protein

Silk fibre contains protein

The structures which appear as "beads on string" in chromatin under electron microscope have all of the following histone proteins, except