The survival of an organism during the struggle for existence is not random, but depends on:
Correct answer: A. Its genetic constitution
- A. Its genetic constitution
- B. Its ability to over-produce
- C. Its ability to acquire characters
- D. Its ability to over-eat
Explanation
According to Darwin's theory of natural selection, the survival of an organism is influenced by its genetic constitution. Organisms with favorable genetic traits that enhance their ability to survive and reproduce are more likely to pass these traits on to the next generation. While overproduction and the ability to acquire new characteristics can influence reproductive success, these factors are inherently reliant on genetic factors. Overeating, on the other hand, is not typically advantageous and can be harmful, reducing an organism's fitness in its environment.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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About Darwinism
Darwinism explains evolution through inherited variation, competition for limited resources, survival and reproduction of better-adapted organisms, and natural selection over generations. It is distinguished from Lamarckism because Darwin's explanation depends on selection acting on existing heritable differences, not the inheritance of acquired characteristics.
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