Eukaryotic chromosomes are composed of which macromolecules

Correct answer is ‘DNA + Protein’ .

Explanation : as we know, Each chromosome in a eukaryotic cell is made up of DNA which is coiled and condensed around an octamer of basic proteins called histones.

• The histone proteins in these cells are H1, H2A, H2B, H3, H4 which are important for the formation of chromosome structure or condensation of DNA.

Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.

Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q arm.” The location of the centromere on each chromosome gives the chromosome its characteristic shape, and can be used to help describe the location of specific genes .