What is the relationship between genes and chromosomes?

Genes contain one or more chromosomes.

Chromosomes use DNA code to manufacture genes.

Genes use DNA code to manufacture proteins for chromosomes.

Chromosomes contain one or more genes.

D. Chromosomes contain one or more genes (really, they contain thousands.)

Step-by-step explanation:

The definition of a chromosome is a segment of DNA that contains a certain gene, which then codes for a protein.

Why not A: Chromosomes contain genes. Why not B: Genes contain the code to manufacture proteins. Chromosomes don't manufacture genes. Why not C: Genes do use DNA to code for proteins, but not "for chromosomes." Chromosomes are basically the pieces of DNA that contain genes, which code for specific functions in the body and specific proteins.