OG1 OG2 A F spots loss of nostril loss of lateral fold spots loss of tympanum 5 digits spikes horn claws chin hair lateral fold tail

Fundamentals of Sectional Anatomy: An Imaging Approach
2nd Edition
ISBN:9781133960867
Author:Denise L. Lazo
Publisher:Denise L. Lazo
Chapter8: Vertebral Column
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Problem 9RQ
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Using the terms listed below, answer all the parts to this question regarding the cladogram for the frogs

Anatomy of a Cladogram

Sympleisiomorphies—shared ancestral states

Synapomorphies—shared, derived character states

Autapomorphies—unique, derived character states

Homoplasies—the result of parallel or convergent evolution where 2 or more organisms independently acquire the same character state (could be the result of a reversal—when, in a particular lineage, a character reverts from a derived back to an ancestral state). Similarity in appearance, but not origin.

Monophyletic group—group of all descendants of a common ancestor

Paraphyletic group—group of some, but not all, descendants of a common ancestor

Polyphyletic group – group of individuals that descend from more than one common ancestor

Polytomy—3 or more taxa emerging from a single node who do not share the most common ancestor

Homologies—Similarities resulting from descent from a common ancestor

Analogies - Similarities resulting from common function but not origin/ancestry

QUESTION:

Part D: What would be an example of a monophyletic grouping on your cladogram?

Part E: What would be an example of a paraphyletic grouping on your cladogram?

Part F: What would be an example of a polyphyletic grouping on your cladogram?

Part G: Is there a polytomy on your cladogram?

OG1
OG2
A
F
spots
loss of nostril
loss of lateral
fold
spots
loss of tympanum
5 digits
spikes
horn
claws
chin hair
lateral fold
tail
Transcribed Image Text:OG1 OG2 A F spots loss of nostril loss of lateral fold spots loss of tympanum 5 digits spikes horn claws chin hair lateral fold tail
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