Sex differences in the calling behavior of clawed frogs (Xenopus laevis) can be traced, in part, to hormone-induced changes in the number and type of muscle fibers in the frog's larynx. This illustrates best the way in which hormones influence behavior by means of their effect on
A) muscles and motor neurons.
B) changes in social preference.
C) sensory or perceptual mechanisms.
D) the central nervous system.

Question

Quizplus · Accepted Answer

Hormones influence behavior by affecting the muscles and motor neurons, as indicated by the changes in muscle fibers in the frog's larynx that affect calling behavior.

Sex Differences in the Calling Behavior of Clawed Frogs (Xenopus