
Concept explainers
a.
To propose:
A hypothesis to explain the type of advantages, there might be for the helpers while they assist the mated pairs instead of seeking their mate and territories.
Concept introduction:
All forms of life on earth are shaped through the process of evolution. Plants as well as animals were adapted to their environs by natural selection. Evolution and human behavior are interconnected. The foundation for behavioral science was laid by Darwin. Evolution explains the behavior in terms of reproductive fitness.
b.
To explain:
How the proposed hypothesis can be tested and the results that are obtained, if it is correct.
Concept introduction:
All forms of life on earth are shaped through the process of evolution. Plants as well as animals were adapted to their environs by natural selection. Evolution and human behavior are interconnected. The foundation for behavioral science was laid by Darwin. Evolution explains the behavior in terms of reproductive fitness.

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Chapter 39 Solutions
Campbell Biology in Focus
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