Fact 1: Chromosomes contain genes, which code for proteins.

Fact 2: Genes are part of the chromosomes and coded for on the DNA strands.

Given the two facts above, answer the question "what are genes coded on?" with the following options: 
- nucleus
 - cell walls
 - A computer
 - Most plants
 - A Greek letter
 - pollen
 - ribosomes
 - DNA strands


 

        DNA strands 