Directions: Answer the following questions in complete sentences on a blank sheet of lined paper. Be prepared to show your work for credit and discuss your answers with your classmates.

  1.  What trait demonstrated by fence lizards is being examined in this article?
  2. Describe how the fence lizard population shows variations of this trait.
  3. What selective pressure is being placed on the lizard population? In other words, how has their environment changed?
  4. Which trait is beneficial to the lizards? Which trait is not beneficial?
  5. Over the course of 100 years, predict how the fence lizard population will change.