A fragment of a chromosome that does not contain a centromere.Because of the absence of a centromere,acentric fragments do not segregate at mitosis and eventually disappear. 缺乏着丝粒的染色体片段。由于缺乏着丝粒,无着丝粒片段在有丝分裂中不分离和最终丢失。......(本文共 189 字) [阅读本文] >>
海量资源,尽在掌握