Which of the following would best determine the fitness of an organism?
Correct answer: A. The number of offspring produced by the organism X
- A. The number of offspring produced by the organism X
- B. How much food the organism consumes in its lifetime
- C. How large the organism grows
- D. The number of offspring produced by the organism's own offspring
Explanation
Fitness is a measure of how well an organism is able to survive and reproduce in its environment. The more offspring an organism produces, the more likely its genes are to be passed on to the next generation. This means that the number of offspring produced is the best measure of an organism's fitness.
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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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