Question

what happens during anaphase b?
multiple choice
kinetochores are pulled toward the poles.
the apc/c gets activated for the first time.
the spindle poles move apart.
the spindle apparatus disassembles.
the nuclear envelope reforms.

Explanation:

Anaphase is divided into Anaphase A and Anaphase B. Anaphase A involves kinetochore microtubules shortening to pull chromosomes toward poles. Anaphase B specifically involves the separation of spindle poles via elongation of polar microtubules. APC/C activation occurs earlier (metaphase-anaphase transition), spindle disassembly and nuclear envelope reforming happen in telophase.

Answer:

The spindle poles move apart.