Download Natural Selection Lab Write Up Introduction: Describe Darwin`s

Natural Selection Lab Write Up
Introduction:
 Describe Darwin’s theory of natural selection in detail
 Explain how Darwin developed this theory
 Explain the effect of natural selection on variations in organisms
 Explain what a species is and how they evolve (convergent & divergent
evolution)
Hypothesis:
 Carefully read the lab and then write a hypothesis for what you will be
trying to prove in the lab (one sentence)
Materials:
 Write the list of materials used in sentence form
Procedure:
 Write the procedure in paragraph form (no numbering)
Results:
 Draw and complete tables 1 and 2 of the lab
 Include 2 graphs on separate pieces of graph paper for the data in tables
1 and 2 (include title, X and Y labels…)
 Write out and answer questions 1 – 6 from your lab sheet (underline the
questions)
Conclusion:
 Restate the hypothesis
 Using your data, explain your results
 Explain how the number of seeds shows natural selection
REMEMBER to SKIP a LINE between EACH section!
Length of
Shell
(mm)
5-10
10-15
15-20
20-25
25-30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
Number of Shells
Number of
Seeds Per
Shell
1
2
3
Number of Shells
Questions:
1. What is the most common length of the shells you measured?
2. What was the most common number of seeds in the peanut shells that you
opened?
3. What might happen if each shell contained fewer than normal seeds and
why?
4. What might happen if each shell contained more than the normal number
of seeds and why?
5. Was there a relationship between the most common length of shells and
the number of seeds they contained? Explain your answer.
6. Write 1-2 paragraphs explaining how shell length and seed number in
peanuts illustrates natural selection within this species.