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nmdcat.online July 14, 2026

In evolutionary biology, “Darwinian fitness” is most accurately measured by:

A. The physical strength and lifespan of an individual organism.
B. The relative number of fertile offspring an individual contributes to the next generation.
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C. The ability of an individual to run fast and escape apex predators.
D. The rate at which an individual undergoes genetic mutations in germ cells.

📝 Explanation

Evolutionary fitness is defined by reproductive success; an organism must not only survive but also successfully pass its genetic material to fertile offspring.

📖 Additional Information

  • The physical strength and lifespan of an individual organism.
  • The relative number of fertile offspring an individual contributes to the next generation.
  • The ability of an individual to run fast and escape apex predators.
  • The rate at which an individual undergoes genetic mutations in germ cells.

Evolutionary fitness is defined by reproductive success; an organism must not only survive but also successfully pass its genetic material to fertile offspring.

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