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Hello students.
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There are four main forces of the evolutionary process.
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Number one, mutation.
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It is formation of newer and different genetic variation which leads to newer characters in off -springs of future generations.
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Example is, example of mutation is emergence of resistant bacteria due to mutations in their ancestral strength.
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Due to no persons in their ancestral strength, they become resistant impugent.
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Coming to number two, it is gene flow.
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It is the moment of individuals into or else out of the population is known as gene flow.
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It will lead to a change in the genetic frequency.
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Example of gene flow is production of children with intercourse between people of different races.
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This is an example of gene flow.
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Of different races.
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Coming to number three, that is, genetic drift.
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Genetic drift is the occurrence of random change in the frequency of allele, which occurs into smaller population...