Weekly Lecture Assignment

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School

University Of Arizona *

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335

Subject

Anthropology

Date

Feb 20, 2024

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docx

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Uploaded by CountAtomGiraffe8590 on coursehero.com

Question 1 (1 point) According to the evolutionary tree of fishes and tetrapods we studied in class (cf. lecture slides), who are we (human) more closely related to? amphibians crocodiles Neither one. We are equally related to amphibians and crocodiles. Question 2 (1 point) According to our fish-tetrapod phylogeny (cf. lecture slides), which of the following statement is TRUE? Mammals are more closely related to amphibians than to birds. Mammals are more closely related to snakes than to ray-finned fishes. Question 3 (1 point) Explain in one sentence why reptiles do not form a monophyletic group. They do not include all their descendants because birds also share the same common ancestor with the reptiles. Question 4 (1 point) Homology is a similarity in STRUCTURE . Similarity in form or function that is not due to common ancestry is called HOMOPLASY . Question 5 (1 point) What do we call homology? Similarity in structure due to adaptation. Similarity in form or function due to adaptation. Similarity in structure due to common ancestry.

None of the above. Question 6 (1 point) The similarity of fins between sharks and orca is an example of homology homoplasy evolutionary stasis transitional form Question 7 (1 point) What may be caused by convergent evolution ? evolutionary stasis homology transitional forms homoplasy Question 8 (1 point) A synapomorphy of mammals is mammary glands two pairs of limbs placenta Vertebrae

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