Read the following statements and choose the set of correct statements: (a) Euchromatin is loosely packed chromatin. (b) Heterochromatin is transcriptionally active. (c) Histone octamer is wrapped by negatively charged DNA in the nucleosome. (d) Histones are rich in lysine and arginine. (e) A typical nucleosome contains 400bp of DNA helix. Choose the correct answer from the options given below:

Step-by-step solution

In a typical nucleus, some region of chromatin are loosely packed (and stains light) and are referred to as euchromatin. The chromatin that is more densely packed and stains dark are called as heterochromatin. Euchromatin is said to be transcriptionally active chromatin, whereas heterochromatin is inactive. In eukaryotes, this organisation is much more complex. There is a set of positively charged, basic proteins called histones. A protein acquires charge depending upon the abundance of amino acids residues with ch