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anth 130

Cuyumaca College

Question Description

Introduction: Primate Hand Features

The primary features that define primates as a taxonomic order are mainly found in the skull and on the hands and feet. The reason for this has to do with the fact that the hands and feet and the head are the areas of the body that interact with the environment the most and as such are are subject to the greatest amount of selective pressures.

Nails, opposable thumbs, friction ridges among other are anatomical features that have been selected for within the primate lineage and assist in the survivability of young primates.

What you are doing

Your task is to explore a primate hand features and explain how that primate hand feature enhance fitness.

Before you begin your task make sure you do the following things

Read lecture notes on primate taxonomy and chapter 6

What you have to do for points

Make sure you answer all of the following questions for full points.

  1. What does the arboreal hypothesis suggest about the reason why primates have the unique features, such as opposable thumbs, that they have on their hand?
  2. Explain how primate hand features increase fitness and give one example. When writing about your example name the hand feature that you have chosen and explain clearly why it increase fitness in a tree environment.
  3. Conjecture what would happen if a primate infant did not possess your chosen primate hand features. Answer this question with the survivability of the infant in mind.

Grading rubric

Click on the "Gear icon" located in the top right-hand corner and then click on "Show Rubric" to view the grading requirements for this discussion.

Tips for success

  • Please keep your answer to only what is asked in the assignment.
  • I recommend composing your content offline in a text editor and then copy and paste the text into your reply post. If something happens you will have an offline copy of all of your hard work!
  • I highly recommend using Google Docs (Drive) to compose offline, as Google plays well with web-based forums. If you are using Microsoft Word to compose offline, you may need to do some editing to the format when you paste it into the reply.

Rubric

Primate hand features

Primate hand features

CriteriaRatingsPts

This criterion is linked to a Learning OutcomeObjectives - to understand primate hand features as adaptations to an arboreal environment.Student will be able to explain the importance of the arboreal hypothesis in explaining primate hand features

2 pts

No Description

Student explained how the arboreal hypothesis is able to explain primate specific hand features

1 pts

No Description

Student described arboreal hypothesis but did not explain its importance to primate hand featrues

0 pts

No Marks

Student did not explain what the arboreal hypothesis is or its importance to hand features

2 pts

This criterion is linked to a Learning OutcomeObjectives - to understand primate hand features as adaptations to an arboreal environment.Student will explain how primate hand features increase fitness and give one examples.

4 pts

No Description

Student was able to explain how primate hand features increase fitness and gave an example of a primate hand feature that clearly increase fitness in a tree environment.

2.67 pts

No Description

Student explained how primate hand features increase fitness but did not give an example that showed how primate hand features increase fitness.

0 pts

No Marks

Student made no attempt at explaining how primate hand features increase fitness.

4 pts

This criterion is linked to a Learning OutcomeObjectives - to understand primate hand features as adaptations to an arboreal environment.Student will be able to explain the importance of the arboreal hypothesis in explaining primate hand features

2 pts

No Description

Student was able to explain what would happen if a primate infant did not possess student's chosen primate hand features.

0 pts

No Marks

Student did not explain what would happen if a primate infant lacked primate hand features.

2 pts

Total Points: 8

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