Endomitosis The duplication of chromosomes without division of the nucleus, causing polyploidy and leading to an increas核内有丝分裂：在细胞核不分裂的情况下进行染色体复制，产生多倍体并使细胞体积增大的一种有丝分裂形式。
Endomitosis occurs regularly in certain tissues, such as the phloem cells of some leguminous plants.核内有丝分裂通常发生在特定组织中，如一些豆科植物的韧皮部细胞。