Determine the method of recombination, Biology

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Which of the following is a false statement regarding the method of recombination or crossing-over?

A. Crossing-over takes place during prophase I of meiosis

B. Recombination happens at the level of the nucleotide and can occur at any point along with the length of the chromosome.

C. Crossing-over is used by organisms to enhance genetic diversity at each generation.

D. Recombination occurs among sister-chromatids of homologous chromosomes.

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