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单词 核分裂
释义 〔clone〕A group of genetically identical cells descended from a single common ancestor, such as a bacterial colony whose members arose from a single original cell as a result of binary fission.无性系:由一共同母体而繁生的一群遗传因子完全相同的细胞,例如一菌落的成员来源于二分核分裂的单一母细胞〔amitosis〕Direct cell division by simple cleavage of the nucleus, without spindle formation or the appearance of chromosomes.无丝分裂,直接核分裂:仅由神经核分裂直接完成的细胞分裂,而无需纺垂体的形成或染色体的出现〔photodisintegration〕Nuclear disintegration or transformation caused by absorption of high-energy radiation, as of gamma rays.光致分裂:由吸收高能量辐射、如射线而引起的核分裂或核转换
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