contrasting the role of song complexity in several species of birds
describing research confirming the suspected relationship between intersexual selection and the complexity of birdsong
demonstrating the superiority of laboratory work over field studies in evolutionary biology
illustrating the effectiveness of a particular approach to experimental design in evolutionary biology
17.2. The author mentions the peacocks tail in line 8 most probably in order to
cite an exception to the theory of the relationship between intrasexual selection and male competition
illustrate the importance of both of the pathways that shaped the evolution of birdsong
draw a distinction between competing theories of intersexual selection
give an example of a feature that may have evolved through intersexual selection by female choice
refute a commonly held assumption about the role of song in mate attraction
17.3. According to the passage, which of the following is specifically related to intrasexual selection?
Female choice
Territorial behavior
Complex song types
Large song repertoires
Visual ornamentation
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