Why is evolution considered a process across generations rather than one individual's lifetime?
Answer and explanation
Correct answer: Because inherited changes accumulate in populations across generations.
Evolution is a change in the inherited characteristics of a population over successive generations. An individual may change during its lifetime because of growth, learning, exercise, or environmental effects, but such acquired changes generally do not alter the population’s hereditary makeup. Evolution requires heritable variation, reproduction, and changes in trait frequencies over time. Therefore option A is correct; the other choices confuse individual development with population evolution.
Frequently asked questions
What is the correct answer to this question?
Because inherited changes accumulate in populations across generations.
Why is this the correct answer?
Evolution is a change in the inherited characteristics of a population over successive generations. An individual may change during its lifetime because of growth, learning, exercise, or environmental effects, but such acquired changes generally do not alter the population’s hereditary makeup. Evolution requires heritable variation, reproduction, and changes in trait frequencies over time. Therefore option A is correct; the other choices confuse individual development with population evolution.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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