Which of the following factors helps in evolu | vedclass

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(C) Evolution is the process of gradual change in the inherited characteristics of biological populations over successive generations. $1$. Variation

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Variation

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(C) Evolution is the process of gradual change in the inherited characteristics of biological populations over successive generations. $1$. Variation refers to the differences between individuals of the same species. $2$. These variations are the raw material for evolution because natural selection acts upon them. $3$. Without variation,there would be no differences for natural selection to favor,making it the fundamental basis of evolution. $4$. While mutation,isolation,and adaptation contribute to the process,variation is the prerequisite for any evolutionary change to occur.

Which of the following factors helps in evolution but is considered the fundamental basis of evolution?

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