Final answer:
Chromosomes are large structures of DNA that contain the genes, the blueprints for making an individual.
Step-by-step explanation:
Chromosomes are large structures of DNA that contain the genes, the blueprints for making an individual. They are coiled bundles of DNA and proteins that contain hundreds to thousands of genes. Human cells have 46 chromosomes (23 pairs) which hold the genetic information necessary for an organism's development and functioning.