Biology: The Dynamic Science
Biology: The Dynamic Science
4th Edition
ISBN: 9781337246422
Author: Peter J. Russell; Paul E. Hertz; Beverly McMillan
Publisher: Cengage Learning US
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Chapter 56, Problem 5TYK
Summary Introduction

Introduction:

There are some male African cichlid fish that maintain their territories and are attractive to egg-laden females. They have developed hypothalamus in the brain, which secretes GnRH (Gonadotropin Releasing Hormone) and stimulates a number of responses. Those who lack territory have the hypothalamus of reduced size and, so, GnRH is less.

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