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nondisjunction n.【生物學】不分離,不分裂。

nondurable

Aneuploidy the condition , resulting from nondisjunction of homologous chromosomes at meiosis , in which one or more chromosomes are missing from or added to the normal somatic chromosome number 非整倍性:在減數分裂的過程中同源染色體不分離而造成的一條或多條染色體的缺失或增加。

Autopoly - ploids may arise from the fusion of diploid gametes that have resulted from the nondisjunction of chromosomes at meiosis 同源多倍體通常可能來自在減數分裂過程中染色體不分離導致的二倍體融合。

Alternatively , like allopolyploids , they may arise by the nondisjunction of chromatids during the mitotic division of a zygote 與異源多倍體相似的是,它們也是在有絲分裂中合子的染色單體不分離形成的。