Solution: The parent cell’s replicated chromosomes condense and become thousands of times more compact during prophase than they were during interphase. These structures now look like X-shaped bodies because each duplicated chromosome is made up of two identical sister chromatids linked at a place called the centromere. During prophase, the mitotic spindle begins to form. The two centrosomes of the cell migrate toward opposite poles.

The exchange of chromosomal segments between non-sister chromatids in meiosis is known as crossing over or recombination. Crossing over results in new gene combinations in the gametes that aren’t found in either parent, increasing genetic diversity.

So, the correct answer is (d).