Organization of the ventral neural tube into a motor system is ...

[K@]

Organization of the ventral neural tube into a motor system is primarily the result of
 
  a. sonic hedgehog.
 b. BMP.
 c. hox genes.
 d. guidepost cells.

Question 2

The lower gravity experienced by astronauts
 
  a. does not affect muscle mass.
 b. increases muscle mass.
 c. decreases muscle mass.
 d. converts fast-twitch muscles to slow-twitch muscles.

[ryhom]

Answer to Question 1

a

Answer to Question 2

c

[K@]

Wow, this really help

[atrochim]

Thanks for the timely response, appreciate it