Fact 1: Information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring.

Fact 2: Intelligence is primarily a genetically inherited trait.

Given the two facts above, answer the question "Intelligence primarily comes from what being pass down?" with the following options: 
- surname
 - Proteins
 - books
 - education
 - animals
 - Chromosomes
 - gene flow
 - satellites


 

      Chromosomes   