Hox genes appear to be influential in developing the a. entire ...

[hubes95]

Hox genes appear to be influential in developing the
 
  a. entire brain.
 b. spinal cord and hindbrain, but not the midbrain or forebrain.
 c. hindbrain and midbrain, but not the forebrain.
 d. spinal cord, but not the brain.

Question 2

Observations of the muscle fibers of people who have experienced spinal cord damage suggest that neural input is especially important to the maintenance of
 
  a. fast-twitch fibers.
 b. slow-twitch fibers.
 c. both fast and slow-twitch fibers.
 d. neither fast nor slow-twitch fibers.

[al]

Answer to Question 1

b

Answer to Question 2

b

[hubes95]

Excellent

[bdobbins]

Gracias!