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1. At the top of page 2-4, you should have determined that there were 2 differences between the M. rufus sequence and the M. eugenii sequence (one at amino acid #27, the other at #31). 2 differences divided by 59 amino acids (the total number in the shorter sequence) is 0.034 (2/59=0.034).

2. The main link you'll need in lab this week is to the
Student Interface to the Biology Workbench

Here's another link to try if that one does not work:

Student Interface to the Biology Workbench, try 2

3. Here's the basic primate tree which our data supported last week.

New World monkeys, Old World monkeys, and hominoids all share the following derived character states (among others):

  • a fused mandibular symphysis
  • the region behind the orbit is enclosed within the skull
  • an increased emphasis on vision and reduced reliance on smell
  • increase in cranial capacity
  • generally, a lack of grooming claws

Old World monkeys and hominoids share the following derived character states (among others):

  • a bony ear tube
  • 32 teeth (two rather than three premolars)

Hominoids share the following derived character states:

  • lack of a tail
  • increase in cranial capacity
  • broad palates and nasal regions
  • relatively long upper limbs

4. Here's a link to the web page mentioned on page 2-12, PRIMATES: The Taxonomy and General Characteristics of Prosimians, Monkeys, Apes, and Humans, where you might want to explore a bit after you've finished the lab this week.


Please email Sarah Deel if you have any questions.


This page maintained by Sarah Deel (sdeel).
Last updated 9 September 2005.