As presented in the textbook, in one of the most influential papers on modern evolutionary theory, Robert Trivers (1972) used sex differences in parental investment to explain different mating systems. Trivers argued that polygyny should be the most
Common mating arrangement if

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Trivers' theory suggests that polygyny is likely when females invest heavily in offspring and males invest little, leading to competition among males for access to females.

As Presented in the Textbook, in One of the Most