Student Worksheet—Biology
Strand: Heredity and Evolution
Name___________________________ Date__________________ School_________________
Student—please print this worksheet and complete it as you interact with the tutorial. The completed
worksheet should be turned in to your assigned teacher.
Tutorial: Natural Selection
1. List three misunderstandings about natural selection.
A.
B.
C.
2. What is the title of Darwin’s book about his idea of natural selection?
3. In the population of salamanders on the island of Sardinia, which ones survived the best?
_____________________ and _______________________
Lesson 1: What did I mean by “survival of the fittest”?
4. Most of the salamanders in the next generation would probably have ________________tongues.
5. A fit individual is one that ___________________and ________________________________.
Lesson 2: Natural Selection is not random.
6. Most biologists believe that selection is based on __________________________.
Lesson 3: Natural Selection does not create variation.
7. Why do long tongued salamanders have a higher fitness than the shorter tongued ones?
8. Could any of the salamanders have grown a longer tongue to get the flies?___________
9. What phenotype varied in the population of salamanders?