Chromosomes can be defined as thread-like structures, made up of proteins and nucleic acid molecules that carry genetic information as genes.
The chromosomes control nearly all the cellular processes as each chromosome contains different genes that code for a specific protein and determine the character or functioning of the cell.
Thus, the correct answer is option). 'coding for the production of all proteins of a cell.'
A symbiosis is an evolved interaction or close living relationship between organisms from different species, usually with benefits to one or both of the individuals involved.
