What resource allocation concern limits investment in oversized genital structures for a silverback?

Answer

Every extra gram of tissue dedicated to the penis represents metabolic energy not spent on muscle mass or threat display

For a silverback whose evolutionary success relies on physical presence and defense, investing heavily in a functionally hidden, large penis is an inefficient use of metabolic energy compared to building bulk.

What resource allocation concern limits investment in oversized genital structures for a silverback?
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