During prophase I of meiosis, crossing over between the sister chromatids occurs. What is the purpose of this process? To produce genetic variation. To duplicate the DNA. To remove the nuclear envelope.

During prophase I of meiosis, crossing over between the sister chromatids occurs. What is the purpose of this process?

To produce genetic variation.
To duplicate the DNA.
To remove the nuclear envelope.
To produce the spindle fibers.

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