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Binary fission in bacteria differs from mitosis chiefly in that it

  • A.involves no spindle and no chromosome condensation
  • B.produces four daughter cells each time rather than two
  • C.halves the amount of genetic material at every division
  • D.requires the nuclear envelope to break down completely

Answer: A

The single circular chromosome is replicated and the copies are drawn apart as the cell elongates, with no spindle involved. A bacterium has no nuclear envelope to dismantle in the first place. The process is correspondingly quicker and simpler than eukaryotic division.

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