Fact 1: Mutations are essential for evolution to occur.

Fact 2: Mutations are changes in the genetic material.

Given the two facts above, answer the question "Changes in what are essential for evolution to occur." with the following options: 
- color of leaves
 - genetic material
 - learned behavior
 - synthetic material
 - the body's largest organ
 - acquired characteristics
 - sensory neurons
 - Most plants


 

  genetic material       