Which of the following statements regarding crossing-over is incorrect? (a) Crossing-over disrup...

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Which of the following statements regarding crossing-over is incorrect?
(a) Crossing-over disrupts the linkage between genes on the same chromosome.
(b) Crossing-over disrupts the linkage between genes on different chromosomes.
(c) Crossing-over produces new genetic combinations.
(d) Crossing-over produces non-parental chromosomes.
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