In the metaphase of cell cycle, the centromere connecting the sister chromatids undergoes transverse splitting and will form ____.
A、isochromosome
B、ring chromosome
C、dicentric chromosome
D、inversion loop
A、isochromosome
B、ring chromosome
C、dicentric chromosome
D、inversion loop
A、Prophase of meiosis I
B、Prophase of meiosis II
C、Metaphase of meiosis I
D、Metaphase of meiosis II
A、metaphase and anaphase
B、prophase and telophase
C、prophase and anaphase
D、metaphase and telophase
A、the number of metaphase chromosomes.
B、the size and shape of the metaphase chromosomes.
C、the banding pattern of the metaphase chromosomes.
D、all of the above.
有丝分裂中,染色质浓缩,核仁、核膜消失是发生在()。
A.前期(prophase)
B.中期(metaphase)
C.后期(anaphase)
D.末期(telophase)
E.间期(interphase)
A、metaphase
B、anaphase
C、prophase
D、synapsis
E、none of the above
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