Answer:
DNA
Step-by-step explanation:
The large molecule that chromosomes contain is DNA. DNA is the genetic material that carries all the information necessary for the growth, development, functioning, and reproduction of living organisms. It is a double-stranded helix made up of building blocks called nucleotides, which are arranged in a specific sequence. The sequence of nucleotides contains the genetic information that determines the characteristics of an individual. Chromosomes are structures made up of DNA and various proteins, and they are responsible for organizing and packaging the DNA within the nuclei of cells. Each chromosome contains many genes, which are specific regions of DNA that code for proteins and other molecules that perform specific functions in the cells of an organism.