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Concept explainers
Figure is attached
Please consider sexual selection operating on red-collared widowbirds assess the lowercase-Roman-numeral-labelled statements that appear immediately below; and click the uppercase-letter-labelled response that is presented below and conveys the most accurate information.
i. The specimen depicted at the top in the figure represents the group in which individuals were manipulated experimentally, trimmed so that tail lengths were shortened substantially.
ii. The specimen depicted at the bottom in the figure represents the group in which individuals were unmanipulated, left untrimmed.
iii. Individuals in the group represented by the specimen at the bottom fared better in condition (measured as body mass relative to length) terms than did individuals in the group represented by the specimen at the top.
iv. Individuals in the group represented by the specimen at the bottom spent more time flying and displaying to potential mates than did individuals in the group represented by the specimen at the top.
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