Disassembly of the nuclear envelope select one: a. causes the inner nuclear membrane to separate from the outer nuclear membrane. b. results in the conversion of the nuclear envelope into protein-free membrane vesicles. c. is triggered by the phosphorylation of integrins.

Disassembly of the nuclear envelope must occur for kinetochore microtubules to form in animal cells. This disassembly of nuclear envelope is triggered by the cyclin-dependent kinase at the onset of mitosis. The reassembly is mediated by multiple interactions of the INM proteins with chromatin. Dephosphorylation of INM proteins at late anaphase/telophase is required for nuclear envelope reassembly. 

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