Which organism would be considered the most biologically fit?
Correct answer: D. Lives 36 years and produces 6 offspring
- A. Lives 45 years and produces 3 offspring
- B. Lives 70 years and produces no offspring
- C. Lives 27 years and produces 1 offspring
- D. Lives 36 years and produces 6 offspring
Explanation
Biological fitness is best measured by an organism's reproductive success, not its lifespan. The organism that lives 36 years and produces 6 offspring is the most biologically fit since it has the highest reproductive output, ensuring a greater presence of its genes in the next generation. The other options have either fewer or no offspring, reducing their biological fitness regardless of their lifespans.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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