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nmdcat.online July 14, 2026

According to the principles of Darwinism, what is the fate of a population that lacks genetic variation when faced with a rapid, severe environmental change?

A. The population will quickly mutate to adapt to the new conditions.
B. The population is at a high risk of extinction because no individuals may possess the traits needed to survive.
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C. The population will survive by learning new physiological processes.
D. Individual organisms will migrate to other planets to find resources.

📝 Explanation

Without pre-existing genetic variation, natural selection has no raw material to work with. If the environmental change is lethal to all identical individuals, the population will go extinct.

📖 Additional Information

  • The population will quickly mutate to adapt to the new conditions.
  • The population is at a high risk of extinction because no individuals may possess the traits needed to survive.
  • The population will survive by learning new physiological processes.
  • Individual organisms will migrate to other planets to find resources.

Without pre-existing genetic variation, natural selection has no raw material to work with. If the environmental change is lethal to all identical individuals, the population will go extinct.

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