Question

Assertion (A): Scaffold proteins are non-histone chromosomal proteins.

Reason (R): They are rich in lysine and arginine.

Options

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true, but (R) is not the correct explanation of (A).

• (A) is true, but (R) is false.

• (A) is false, but (R) is true.

Answer 1

(A) is true, but (R) is false.

Explanation:

The statement (A) is correct. Non-histone chromosomal proteins called scaffold proteins aid in chromosome organization and stability.
Reason (R) is not correct. Lysine and arginine are not especially abundant in scaffold proteins. Rather, they are usually abundant in other amino acids that aid in the formation of the scaffold structure, such as glutamine and proline.