Final answer:
Chromosomes contain genetic material, replicate during the S phase of the cell cycle, and are composed of DNA and proteins.
Step-by-step explanation:
A. Chromosomes contain genetic material. C. Chromosomes replicate during the S phase of the cell cycle. D. Chromosomes are composed of DNA and proteins.
Chromosomes are structures within the nucleus that are made up of DNA and proteins, which contain the genetic material. They replicate during the S phase of the cell cycle, ensuring that each daughter cell receives a complete set of chromosomes. Therefore, options A, C, and D are true statements about chromosomes.