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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 natural selection led to a change in lactase persistence over 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 in an area with access to milk (blank graph shown).  (2 points) 2.  Explain in 3-4 steps, how lactase persistence would evolve by natural selection.  (3 points)

Which core principle of information security including Confidentiality, Integrity, and Availability does Advanced Encryption Standard (AES) directly support? (Select the best answer choice.)

What is the main purpose of the verification algorithm in Message Authentication Code (MAC)?

  A 4.1 kg mass with an initial velocity of 9 m/s [east] collides with a second mass of 5.2 kg that is initially stationary. After the collision, the second mass has a velocity of 6.5 m/s [E 26 degrees N]. a) solve for the velocity of the first mass after the collision. b) explain how you would solve for the % elasticity of the collision.

Which Data Encryption Standard (DES) modes can best be used for authentication?

  Solve for the electric field strength at a location that is 8m [East 20 degrees North] of a +2.1C charge and 6m [South 40 degrees East] of a -3.2C charge.

The main change from MD4 to MD5 includes__________. (Select the best answer choice.)

  If an airplane has a velocity relative to the air of 180 m/s [N 10 degrees E] and the air has a velocity relative to the ground of 30 m/s [E 10 degrees S], find the velocity of the plane relative to the ground.    

Why is Data Encryption Standard (DES) considered “insecure”?

Which of the following terms is used to refer to the output of Message Authentication Code (MAC)?