How Do Environmental Changes Affect a Population?
Lab Notebook
Global Warming Data Table
Number of:
Size
Color
Large
Medium
Small
Black
Brown
Parental generation
2
22
2
22
3
10th generation
0
20
5
25
0
20th generation
0
10
20
25
0
30th generation
0
3
22
25
0
Graph your Global Warming data, using this key:
Large leafhoppers = •
Medium leafhoppers = O
Small leafhoppers = •
Black leafhoppers = X
Brown leafhoppers = X in color
Predator Change Data Table
Number of:
Size
Color
Large
Medium
Small
Black
Brown
Parental generation
1
22
2
22
3
10th generation
1
23
1
15
10
20th generation
1
23
1
10
15
30th generation
0
25
0
2
23
Graph your Predator Change data:
Vegetation Change Data Table
Number of:
Size
Color
Large
Medium
Small
Black
Brown
Parental generation
2
22
1
22
3
10th generation
1
23
1
23
2
20th generation
0
25
0
24
1
30th generation
0
25
0
25
0
Graph your Vegetation Change data:
Pesticide Application Data Table
Number of:
Size
Color
Large
Medium
Small
Black
Brown
Parental generation
2
22
1
22
3
10th generation
5
20
0
24
1
20th generation
10
15
0
25
0
30th generation
23
2
0
25
0
Graph your Pesticide Application data:
Questions
1. What role does genetics play in the variation seen in this leafhopper population?
Different forms of genes in leafhopper population provides the variety of characteristic seen.
2. Note the results from the 20th generation under global warming conditions. Before continuing with the 30th generation, predict the population composition of the 30th generation. One would accept a loss of lighter color and larger leafhopper leading to a population predominated by darker smaller leafhopper.
3. What happened to the proportion of each type of leafhopper in subsequent generations under global warming conditions? Suggest a reason why the traits of the 30th generation make this population better adapted to its altered environment. There were fewer orange and large leafhoppers and more small