- scent attracts predators as well as mates
- long tails can increase the chance that squirrels are caught by predators
- squirrels with longer tails can more easily balance as they navigate through trees
Here is the initial data taken in 2006:
Tail length (cm) # Individuals Counted
10 5
11 8
12 12
13 15
14 20
15 30
16 28
17 21
18 14
19 9
20 3
For homework, choose ONE of the counts from 2016 below. On the back of your Chapter 16-1 notes...
- Create a labelled line graph that includes both the 2006 data as well as the 2016 data (2 separate, distinct lines, on the same graph)
- Identify the option you chose (A or B)
- Identify the type of natural selection that occurred on the grey squirrel population over the 10 years.
- Explain a brief but possible cause that would create the kind of natural selection you identified on the squirrel population .
2016 Data (Option A)
Tail length (cm) # Individuals Counted
10 10
11 16
12 26
13 25
14 11
15 5
16 15
17 23
18 30
19 25
20 17
2016 Data (Option B)
Tail length (cm) # Individuals Counted
10 1
11 4
12 10
13 18
14 25
15 40
16 33
17 23
18 12
19 8
20 1
Unit 5: Evolution & Biodiversity
Tail length (cm) # Individuals Counted
10 10
11 16
12 26
13 25
14 11
15 5
16 15
17 23
18 30
19 25
20 17
2016 Data (Option B)
Tail length (cm) # Individuals Counted
10 1
11 4
12 10
13 18
14 25
15 40
16 33
17 23
18 12
19 8
20 1
Unit 5: Evolution & Biodiversity