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Here is your summer '09 assignment:

1.  Why doesn't exponential growth occur in living populations ?

2.  Define the selection coefficient, then give an example of this as it applies to evolution.

3.  In terms of time, when does selection take place?

4.  Humans have three visual pigments as well as some primates.  What are these pigments and why do we have three when other mammals have just two? Explain your answer in terms of natural selection. 

5.  Howler monkeys of the new world and their old world monkeys share similar genes but evolved on different continents at different times. Explain how this is possible.  

Posted 7/25/09 

      Here are the summer reading chapter notes:

Human Digestion                                     Nervous System

Human Circulation                                   Sensory & Motor Mechanism 


Osmoregulation/Excretion                    Hormones & the Endocrine system      

Dover Middle School   2368 Route 22   Dover Plains, NY 12522   Phone: (845) 877-5740   Fax: (845) 877-5749

The Dover Union Free School District does not discriminate on the basis of race, color, national origin, sex, disability, or age in its programs and activities.  
The following people have been designated to handle inquiries regarding the non-discrimination policies:

Donna Basting, Assistant Superintendent for Curriculum, Staff Development, and Technology
2368 Route 22, Dover Plains, NY  12522
845-877-5700 x1233 

Genie Angelis, High School Principal
2368 Route 22, Dover Plains, NY  12522
845-877-5700 x1143

For further information on notice of non-discrimination, visit for the address and phone number of the office that serves your area, or call 1-800-421-3481.

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