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During mitosis ER and nucleolus begin to disappear at 

  • late prophase

  • early metaphase

  • late metaphase

  • early prophase

Answer

D.

early prophase

In mitosis, prophase is the longest phase of karyokinesis.In early prophase, nuclear membranes, nucleolus start disintegrating. cells cytoskeleton, Golgi complex, ER, etc disappear.

In mitosis, prophase is the longest phase of karyokinesis.In early prophase, nuclear membranes, nucleolus start disintegrating. cells cytoskeleton, Golgi complex, ER, etc disappear.