3. Module 1. Ecomorobe a. Observe the morphologies of the eight different lizard species. For now, assume that you have just discovered these lizards and you don't even know if they are 8 different species or 1 species or some other number of species. You just have 8 lizards, 4 from each island. b. Following the module, group the lizards by morphology. i. How many groups did you find? ii. What sorts of traits or characters did you use to group the lizards? c. Then take some more careful measurements as shown and regroup them if needed. i. Did your measurements match the reference set? ii. Compare Lamellae Count, Relative Hindlimb Length, and Relative Tail Length among your specimens, and regroup your species based on these characters. iii. Did your groupings change? If so, how? iv. Watch the video to see if your conclusions match those of Dr. Losos

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter24: Systematics And Phylogenetics: Revealing The Tree Of Life
Section: Chapter Questions
Problem 8TYK: When systematists study morphological or behavioral traits to reconstruct the evolutionary history...
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3. Module 1. Ecomarobs
a. Observe the morphologies of the eight different lizard species. For now, assume
that you have just discovered these lizards and you don't even know if they are 8
different species or 1 species or some other number of species. You just have 8
lizards, 4 from each island.
b. Following the module, group the lizards by morphology.
i. How many groups did you find?_
ii. What sorts of traits or characters did you use to group the lizards?
c. Then take some more careful measurements as shown and regroup them if
needed.
i. Did your measurements match the reference set?
ii. Compare Lamellae Count, Relative Hindlimb Length, and Relative Tail
Length among your specimens, and regroup your species based on these
characters.
iii. Did your groupings change? If so, how?
iv. Watch the video to see if your conclusions match those of Dr. Losos
d. Now. If this is all you knew about these lizards, how many "species" would you
conclude there are?
e. What sort of species definition would you be using?
i.
f. Skip the graphing step
g. Take the quiz
4. Some questions
a. You've seen that there are 4 comprobs on both Hispaniola and Puerto Rico:
grass-bush anoles with long tails, long-legged trunk-ground anoles, short-legged
twig anoles, and trunk-crown, or canopy, anoles with large toe pads.
b. Describe 2 evolutionary pathways that could have led from a single ancestral
anole species (or carb) to 4 camarobs on each of 2 islands:
i.
Transcribed Image Text:3. Module 1. Ecomarobs a. Observe the morphologies of the eight different lizard species. For now, assume that you have just discovered these lizards and you don't even know if they are 8 different species or 1 species or some other number of species. You just have 8 lizards, 4 from each island. b. Following the module, group the lizards by morphology. i. How many groups did you find?_ ii. What sorts of traits or characters did you use to group the lizards? c. Then take some more careful measurements as shown and regroup them if needed. i. Did your measurements match the reference set? ii. Compare Lamellae Count, Relative Hindlimb Length, and Relative Tail Length among your specimens, and regroup your species based on these characters. iii. Did your groupings change? If so, how? iv. Watch the video to see if your conclusions match those of Dr. Losos d. Now. If this is all you knew about these lizards, how many "species" would you conclude there are? e. What sort of species definition would you be using? i. f. Skip the graphing step g. Take the quiz 4. Some questions a. You've seen that there are 4 comprobs on both Hispaniola and Puerto Rico: grass-bush anoles with long tails, long-legged trunk-ground anoles, short-legged twig anoles, and trunk-crown, or canopy, anoles with large toe pads. b. Describe 2 evolutionary pathways that could have led from a single ancestral anole species (or carb) to 4 camarobs on each of 2 islands: i.
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