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In class we discussed lactase persistence, a human trait that recently evolved by natural selection.  In class, you drew a graph showing how lactase persistence changed through time, in areas with access to milk from cows.  Below, I gave you the basic graph framework you used in class.  1.  Sketch this graph, drawing a line to represent the frequency of lactase persistence over time.  (2 points) 2.  List 3 steps of natural selection, and briefly explain how each is represented in the graph.  (3 points)

This question is to ensure that you are in the room taking the exam. If you are not in the exam room or at an approved testing location (such as the DRC), close this exam immediately and contact your instructor (Presc030@umn.edu). What is the secret code?

How does the Bernoulli effect contribute to phonation?

What is the difference between judicial activism and judicial restraint?  Please provide relevant examples of each from the textbook.

Define federalism and explain how it limits national power.

Describe three reasons why achieving effective governance and meaningful representation can be difficult even when people agree on these principles.  

If the pinion has 10 teeth, what will the tangential force Wt between the two gears in lbf? Type the final answer(s) below, to two decimal places. And upload all written work as a pdf after the exam. 

Which Python command can be used for calculating an integral?

What is the minimum number of teeth needed on pinion to avoid interference?Round to the appropriate whole number (no decimals). 

List 2 leading health indicators for Healthy People 2030 initiative that our government has published to promote health and prevent illness: