Chromosomes are made up of condensed DNA and proteins called histones. This DNA is wrapped around the histones to form chromatin. The chromatin structure helps to organize and package the DNA within the cell nucleus. Chromosomes also contain RNA molecules, which are involved in the regulation of gene expression. Codons, on the other hand, are sequences of three nucleotides in mRNA that code for specific amino acids during protein synthesis.
So what is the correct answer
The correct answer is: Chromosomes are made of DNA and proteins (specifically histones), forming chromatin.
