Many of the molecules that actively maintain the integrity of a cell's chromosomes,particularly during DNA replication and mitosis,are involved in crossing over during ____ of meiosis.

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The process of crossing over, where homologous chromosomes exchange genetic material, occurs during prophase I of meiosis. This is when chromosomes condense and pair up, allowing for the exchange of genetic information between maternal and paternal chromosomes. Therefore, the molecules that maintain chromosome integrity during replication and mitosis are not involved in the crossing over process.

Many of the Molecules That Actively Maintain the Integrity of a Cell's