crossing over編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看crossing overcrossing over — 名詞名詞1. the exchange of genetic material between homologous chromosomes during meiosis1.名詞釋義互換the exchange of genetic material between homologous chromosomes during meiosis例句Crossing over increases genetic diversity in offspring.