Points of contact between the chromatid of one chromosome and the chromatid of the other chromosome of a pair, where crossing over and exchange of chromosome segments occur are termed

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Points of contact between the chromatid of one chromosome and the chromatid of the other chromosome of a pair, where crossing over and exchange of chromosome segments occur, are called chiasmata. This special aspect of the first meiosis takes place at metaphase. Crossing over occurs during first meiosis, but the contacts between pairs of chromosomes occur at chiasmata. Crossing over occurs during first meiosis; the second stage of meiosis is essentially a mitotic division in which each chromosome splits longitudinally. Crossing over and exchange of chromosome segments occur at the chiasmata, not interpolation.

Points of Contact Between the Chromatid of One Chromosome and the Chromatid