What is a proximate cause of the non-combative behavior of male African cichlids that do not hold territories?
a. Cichlids can detect and store information about aggressive encounters.
b. The GnRH-producing neurons in the hypothalamus are small.
c. The testes do not produce testosterone.
d. GnRH production is high.
e. Noncombative behavior allows the male to build his strength for a takeover attempt of territory.
ANSWER: b
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