Answers to the following questions as you work through the virtual lab. (I put this section on top because I was having issues with adding the graphs and table from the lab site.)
a.
At the
beginning of the virtual lab, you were asked to sort eight lizards into
categories. What criteria did you initially use to make your groups? I separated
them from Green and Brown lizards.
b.
Did
you revise your criteria later? Why? Yes I did, because I didn’t quite (still
don’t) know how to label them. But I chose the new set because I learned that
there’s more to it than just green and brown or long legged and short legged.
c.
An
adaptation is a structure or function that is common in a population because it
enhances the ability to survive and reproduce in a particular environment.
Provide one example and an explanation of one adaptation in the Anolis lizards.
Anolis lizards are some of the best examples of both
adaptive radiation and convergent evolution. Populations of
lizards on isolated islands diverge to occupy separate ecological
niches, mostly in terms of the location within the vegetation where
they forage (such as in the crown of trees vs. the trunk vs. underlying shrubs).
These divergences in habitat are accompanied by morphological changes primarily related to
moving on the substrate diameter they most frequently encounter, with twig
ecomorphs having short limbs, while trunk ecomorphs have long limbs. (http://en.wikipedia.org/wiki/Anolis)
d.
Provide
one evolutionary explanation for why lizards living in the same part of the
habitat (i.e., grass) would have similar characteristics.
Because
some lizards radiate independently, mostly, producing the same set of habitat
specialists, termed ecomorphs.
e.
What
is an ecomorph? Provide one example from the virtual lab.
All
the lizards from the lab are ecomorphs. Pulchellus is one example of an ecomorph.
Ecomorphs are species with the same structural habitat.
f.
How is
an ecomorph different from a species? A species is a group of living organisms
consisting of similar individuals capable of exchanging genes or interbreeding.
Ecomorphs is a species of Lizard.
g.
Explain
how a particular body feature of one of the lizard ecomorphs from the virtual
lab is an adaptation to their particular niche. The A. cristatellus normally
stay in trees for protection. If a predator approaches, the male extends his
dewlap and runs away. Some live under the sand. (http://en.wikipedia.org/wiki/Puerto_Rican_crested_anole)
Data Table
|
1. Your
Measurements Table
|
||||||||
|
Hindlimb
Length
|
42.0
mm
|
48.4
mm
|
16.9
mm
|
30.9
mm
|
38.3
mm
|
46.0
mm
|
57.9
mm
|
15.6
mm
|
|
Body
Length
|
48.3
mm
|
58.3
mm
|
34.3
mm
|
38.3
mm
|
41.8
mm
|
60.3
mm
|
63.7
mm
|
37.2
mm
|
|
Tail
Length
|
112.7
mm
|
117.8
mm
|
40.1
mm
|
114.5
mm
|
146.1
mm
|
139.9
mm
|
128.9
mm
|
45.8
mm
|
|
Lamellae
Count
|
45
|
31
|
25
|
32
|
29
|
46
|
31
|
21
|
|
Reference
Measurements Table
|
||||||||
|
A.
evermanni
|
A.
cristatellus
|
A.
occultus
|
A.
pulchellus
|
A.
olssoni
|
A.
coelestinus
|
A.
cybotes
|
A.
sheplani
|
|
|
Hindlimb
Length
|
41.8
mm
|
49.0
mm
|
16.8
mm
|
30.8
mm
|
38.9
mm
|
45.5
mm
|
57.2
mm
|
15.2
mm
|
|
Body
Length
|
47.7
mm
|
58.5
mm
|
34.3
mm
|
37.9
mm
|
41.8
mm
|
60.9
mm
|
63.3
mm
|
36.9
mm
|
|
Tail
Length
|
113.0
mm
|
118.3
mm
|
39.8
mm
|
115.2
mm
|
147.2
mm
|
139.6
mm
|
129.1
mm
|
44.9
mm
|
|
Lamellae
Count
|
45
|
31
|
25
|
32
|
29
|
46
|
31
|
21
|
46
0.91 mm
Continue
A. cybotes
31
0.42 mm
0.87 mm
A. coelestinus
21
45
0.83 mm
A. olssoni
A. evermanni
31
0.49 mm
A. cristatellus
25
0.81 mm
A. pulchellus
32
0.92 mm
Find the appropriate position on the graph for each species’ toepad lamellae counts and relative hindlimb length measurements. Then, drag each species name to that location. After you finish graphing your results, press "Continue" to see both graphs side by side.
Your Measurements Table
Open results table in a new window
Number of Lamellae versus Relative Hindlimb Length for Anole Ecomorphs
29
A. occultus
0.76 mm
Plotting Toepad versus Hindlimb Length
A.sheplani
Module 1: Ecomorphs
Back
↓ Drag ↓
Relative Hindlimb Length
Lamellae Count
Attention
Continue Anyway
Redo Placement
The placement of the labels outlined in red do not match your measurements.
Attention
Continue Anyway
Redo Placement
The placement of the label outlined in red does not match your measurements.
Find the appropriate position on the graph for each species' relative tail length and relative hindlimb length measurements. Then, drag each species name to that location. After you finish graphing your results, press "Continue" to see a graph of toepad lamellae versus relative hindlimb length measurements.
Plotting Tail versus Hindlimb Length
Continue
Tail versus Hindlimb Length Measurements for Anole Ecomorphs
Your Measurements Table
Relative Hindlimb Length
Relative Tail Length
0.87 mm
0.83 mm
0.49 mm
0.81 mm
0.92 mm
0.76 mm
0.91 mm
0.42 mm
2.33 mm
2.02 mm
1.17 mm
2.99 mm
3.50 mm
2.32 mm
2.02 mm
1.23 mm
A. evermanni
A. cristatellus
A. pulchellus
A. occultus
A.sheplani
A. cybotes
A. coelestinus
A. olssoni
Open results table in a new window
Module 1: Ecomorphs
Back
↓ Drag ↓
Attention
Continue Anyway
Redo Placement
The placement of the labels outlined in red do not match your measurements.
Attention
Continue Anyway
Redo Placement
The placement of the label outlined in red does not match your measurements.
Many of these species do the classic "push-up." :-)
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