Organic evolution is change in

Single individual

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A few members of population

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Major portion of population

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Entire population

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Solution

The correct option is A Major portion of population
The process by which changes in the genetic composition (major portion) of populations of organisms occur in response to environmental changes is called organic evolution.
Hence organic evolution is the change in the major portion of the population.
So, the correct answer is 'Major portion of the population'.

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Change in frequency of alleles in a population results in evolution, is proposed in:

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