Fact 1: Genes that are located on the same chromosome are called linked genes.

Fact 2: Thousands of genes are linked together in a chain to form chromosomes.

Given the two facts above, answer the question "What do genes do to form a chain?" with the following options: 
- interact
 - spread flower seeds
 - Break apart
 - Link together
 - reproduce
 - Duplicate
 - Break down
 - It expands


 

    Link together     